音标：[ˌpɔpjuˈleiʃən ˈsɑ:mpl] ；

[医]群体抽样

population sample的用法和样例：

例句

Tentative experimental results demonstrate that the CFI sample plots are well representative of Zhejiang forest resources, and obvious systematic deviation does not exist.初步试验结果表明，浙江省森林资源连续清查总体样本具有较好的代表性，不存在明显的系统偏差。

Is It a Good Idea to Control Population Growth in the World?

Lesson 9 Is It a Good Idea to Control Population Growth in the World? Text What Overpopulation Feels Like We moved slowly through the city in a taxi and entered a crowded slum district. The temperatur

发表于:2018-11-27 / 阅读(410) / 评论(0)

高级口语教程

原版英语对话：Taking a Urine Sample(2)

A: Why are you handing me a plastic cup? B: Your doctor wants to test your urine and needs a sample. A: How am I supposed to do that? B: We need you to urinate like you normally would, and then stop and finish into the cup. A: What am I supposed to d

发表于:2018-12-02 / 阅读(323) / 评论(0)

英语情景对话-健康

医疗服务英语 un02_13

[00:05.15]第十三部分化验取样 [00:10.29]1.The first test is no problem, [00:12.92]做第一项检查没有问题, [00:15.54]but the second one has to be done on an empty stomach. [00:33.78]但第二项目得空腹做. [00:52.01]2.How long do I have to fast? [01:01.04]

发表于:2018-12-05 / 阅读(385) / 评论(0)

医疗服务英语

数学英语 41 What are Statistics and Estimators?

by Jason Marshall Sometimes statistics* seems magical. Of course, there isnt really anything magical going onbut the fact that statistical methods can be used to pull useful information out of a hatful of messy data is, at a minimum, remarkable. And,

发表于:2018-12-07 / 阅读(290) / 评论(0)

数学英语

用听的背单词-基础2000MP3(QS-12)

safe--安全 sale--出售 same--相同的 save--节省 sad--悲伤 salad--沙拉 sample--样品

发表于:2018-12-16 / 阅读(208) / 评论(0)

用听的背单词-基础2000MP3(h-z)

原版英语对话：Taking a Urine Sample(1)

A: What is that plastic cup for? B: Your doctor has requested a urine sample. A: Am I supposed to pee into the cup? B: We want what we call a clean sample. Urinate a drop or so into the toilet, and then stop the flow and urinate into the cup. A: Then

发表于:2018-12-16 / 阅读(271) / 评论(0)

英语情景对话-健康

英语口语王想说就说（五）16

发表于:2018-12-26 / 阅读(290) / 评论(0)

英语口语王-想说就说(五)

商务口语：怎样提出具体价格

星级典句：第一句：We are pleased to quote you for 1500 dozen men shirts as for the sample you sent before at $20 per piece. 我们愿意按照你方送来的样品提供1500打男士衬衫，每件20美金。? A: We made the offer subject t

发表于:2018-12-26 / 阅读(241) / 评论(0)

天天商务口语

新标准初中英语九年级(下):UNIT1 World population

[00:01.84]3 Listen and complete. [00:06.70]What have the children done for their project [00:10.30]on population? [00:11.96]Listen and complete their sentences. [00:16.14] [01:04.64]4 Listen and complete. [01:08.78]Listen and fill in the missing info

发表于:2018-12-29 / 阅读(332) / 评论(0)

外研社新标准初中英语九年级

财会实务-Sample Agreement To Form Business Entity

The undersigned parties hereby agree to form a _____________ (specify type of business entity), in the state of ___________, primarily for the following purposes: ______________ The principal place of

发表于:2019-01-03 / 阅读(280) / 评论(0)

财会英语

DEVELOPMENT REPORT - World Population by 2050

DEVELOPMENT REPORT - World Population by 2050 By Jill Moss Broadcast: Monday, August 30, 2004 This is Gwen Outen with the VOA Special English Development Report. New research shows that Earth will hav

发表于:2019-01-06 / 阅读(264) / 评论(0)

农业与发展

关于质量

关于质量我们不得不遗憾地向贵公司报告: 贵公司6月29日售给我公司的虾罐头质量太差, 使我们收到不少抗议。 We regret to have to inform you that the tins of lobster which you sold me on 29 June have caused numer

发表于:2019-01-11 / 阅读(316) / 评论(0)

实用英语

Sample Outline and Essay

Below you will find a sample outline and the essay written from that outline. OUTLINE Paragraph 1 (Introduction) I. Leading sentence: It took me eighteen years to realize what an extraordinary influence my mother has been on my life. II. Summary of m

发表于:2019-01-20 / 阅读(341) / 评论(0)

实用英语

纯正英语一分钟-population

The worlds population is getting bigger and bigger. Theres a population explosion in some countries. Im not sure if this is good or bad. The Earth can only support a limited number of people. One day, the worlds population will be too big to feed eve

发表于:2019-01-21 / 阅读(348) / 评论(0)

纯正英语一分钟

2007年VOA标准英语-World Population Moving More Toward Urban Areas

By Robert Raffaele Washington 10 July 2007 This week marks the United Nations' annual observance of World Population Day (Wednesday July 11th) -- focusing attention on issues surrounding population growth worldwide. The annual event comes on the heel

发表于:2019-02-02 / 阅读(254) / 评论(0)

2007年VOA标准英语（七月）

VOA常速英语2008年-Palestinian Population Grows by 30 Percent in P

By Jim Teeple Jerusalem 11 February 2008 For the first time in a decade there is a new accurate census of Palestinians living in the West Bank, the Gaza Strip and East Jerusalem. VOA's Jim Teeple has details from our Jerusalem Bureau. The new census

发表于:2019-02-06 / 阅读(216) / 评论(0)

VOA常速英语2008年（二月）

求职信应该包括的几个要素

1. To explain where the applicant has got the information about the vacancy. For example, he can learn it from his friends, or in the advertisement, or in some papers, or he just wants to try his luck. SAMPLE: Having noticed the enclosed advertisemen

发表于:2019-02-06 / 阅读(288) / 评论(0)

实用英语

咱们裸熊第12期:裸熊餐车

Worst food ever...1/4 star. 史上最差食物...四分之一个星。 Why give 1/4? They have to learn. 为什么要给四分之一？他们得受点教训。 Eh, I liked the ambience. 呃，我喜欢那的环境。 Well, I'm not pulling any punches

发表于:2019-02-08 / 阅读(257) / 评论(0)

咱们裸熊

咱们裸熊第13期:烤馅饼

Samples? 试吃吗？ I don't get it. Our food is good. 我不明白。我们的东西很好吃啊。 Why do people eat that stuff? 为什么大家情愿吃那种东西啊？ Hey, you! Why don't you eat our food? ! Huh? ! Why? ! 嘿，你过来！你为

发表于:2019-02-08 / 阅读(250) / 评论(0)

咱们裸熊

【健康】尿检-Taking a Urine Sample

发表于:2019-02-27 / 阅读(273) / 评论(0)

健康-Health

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学英语单词

baseline sequential axis