单词：primitive line
primitive line的用法和样例：
例句
- It is equired for the formation of the primitive streak during mouse gastrulation.它在小鼠原肠期的原条形成过程中起重要作用。
单词：primitive line 相关文章
The story of how we have systematically observed the heavens begins in the days before recorded time. For primitive man, the sun reigned supreme. Its recurring cycles of light and darkness formed the
疯狂英语2001年
Section A [00:02.90]1. M: We've got 34 on the list so far [00:08.75]but I'm sure it'll be up in the forties before we finish. [00:13.90]W: Well,in that case a sit-down dinner is out of the question. [00:19.15]It'll have to be a buffet. [00:22.80]Q: W
决胜六级英语听力
The full moon triggers a frenzy of activity. 满月会引发一连串狂乱的事件 It is the time of the highest tides. 海水在此时达到满潮 And in the oceans the full moon's bright light 在海中，满月明亮的胧光 is a mating call fo
2013年VOA慢速英语(三)月
[00:01.48]This is because the subiect [00:03.53]is mentally condidering whether [00:05.29]to tell the truth,part of the truth, [00:07.47]or a complete lie. [00:09.56]Latencies of two or three seconds [00:11.84]should be regarded as highly suspicious.
北师大版高中英语模块11(选修)
[00:00.00]1.W:Do you have a calculator that you could lend me for a few days? [00:06.11]I just have no idea where mine is. [00:10.27]M:Well,yes,I have one.But actually my sister is using it now. [00:16.33]Q:What do we learn from this conversation? [0
英语四级听力练习集锦
The moon mission is open to the public, 月球任务是对大众开放的 meaning anyone who has the financial capability 任何人只要能负担一亿元的机位费用 to afford the price of the seat, 就可以参加 they're each priced at a hundr
神秘的月球
SAVIDGE (voice-over): Darkness falls in St. Louis and with it, the temperature. UNIDENTIFIED FEMALE: Blowing snow as well, the wind chill index five below downtown at the arch. SAVIDGE: And at the New Life Evangelistic Shelter the homeless have begun
CNN2010年(一)月
1.The Bushmen are _______ hunters even though their weapons are primitive. A.favourite B.original C.sufficient D.expert 2.Before he left the White House, the president made a _______ speech. A. quarrel B.symbol C.automobile D.farewell 3.The local gov
大学四六级阅读
[00:00.00]Unit 30 [00:06.27]Task:who will go on Shipwrecked? [00:10.50]1 Read about a new TV programme [00:14.45]called Shipwrecked! [00:16.90]Shipwrecked!will be a major new TV series [00:19.77]featuring six volinteers(plus any children they [00:23.
北师大版高中英语模块10(选修)
Time is running out for my friend. While we are sitting at lunch she casually mentions she and her husband are thinking of starting a family. We're taking a survey,she says, half-joking. Do you think I should have a baby? It will change your life, I
阅读空间
听多了流行的歌曲，今天给大家来一首老歌经典，希望大家会喜欢。 如果大家有什么好歌，也可以给我留言或是在评论栏里给大家推荐。 I walk the line By Johnny Cash I keep a close watch on this heart of
好听的英文歌曲
如果嫌要发短信的内容长，不方便交流，费时费力，你建议对方打电话，可以说Let's go primitive。primitive的意思是原始的，go primitive就是采用原始的方式，显然电话比短信出现的早，相比之下就
美国俚语
HARI SREENIVASAN, PBS NEWSHOUR WEEKEND ANCHOR: After days of negotiations for a prisoner exchange apparently broke down, ISIS today reportedly executed a Japanese journalist it had been holding hostage in Syria. Just last weekend, ISIS also beheaded
PBS访谈社会系列
No Gym. No Problem Maybe its too expensive. Maybe youre too shy. Some people just plain do not like the gym. It can be boring, intimidating, and it can seem somewhat redundant. The good news is theres another way. Sports! Here well take a look at wha
阅读空间
雅思写作常见句型（二） 26． if any结构，if any和if ever，意思是果真有，即使有，表示加强语气。与此类似的还有：if anything（如有不同的话，如果稍有区别），if a day（=at least，至少）。 The
实用英语
Line In.... Line Down Line in... line down... line in* Line in... line down... line in... line down Line in... line down... line in... line down Line in and save me Myself can drug me down Line in, forever blissful Continue to line down Line in... li
英文摇滚歌曲
Helen: This is Real English from BBC Learning English. Im Helen. Zoe: 大家好，我是刘佳。Helen, 今天咱们要学的是什么最新表达呢？ Helen: Todays new expression is bottom line. Zoe: Bottom line. Helen, 这个短语说的是什么啊？ Helen: Well, bottom line is
地道英语在线听