浮选法，浮游分离

游泳—Swimming

My kids are taking swimming lessons now at a local swimming pool. The lessons first teach kids how to not be afraid of the water by learning how to put their face under the water and holding their breath for a few seconds. Next, the lessons teach chi

发表于:2018-12-03 / 阅读(154) / 评论(0)

空闲时间—In Your Free Time

旅游英语对话-Talking to a Flight Attendant(2)

A: I am kind of confused about the in-flight instructions and need to ask you a few questions. B: It would be my pleasure to help you with any questions you might have. A: Where is that card that shows my nearest exit? B: That card is in the seat poc

发表于:2018-12-30 / 阅读(165) / 评论(0)

旅游英语对话

旅游英语对话-Talking to a Flight Attendant(1)

A: Can I ask you some questions about the in-flight instructions? B: I would be happy to help you clarify anything you need help with. A: Could you help me find out where my nearest exit is? B: There is a card in your seat pocket that shows you where

发表于:2018-12-30 / 阅读(181) / 评论(0)

旅游英语对话

英语听力精选进阶版 6332

The founder of Facebook ended a busy week, which saw his company valued at $106bn after a stock market flotation, by getting married. Mark Zuckerberg, who's the CEO of the world's most popular social networking site, wed his long-term girlfriend Pris

发表于:2019-02-21 / 阅读(160) / 评论(0)

英语听力精选进阶版

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Abel theorem

agricultural collectivization

arcubalist

automatic program language