[化] 取代苯; 苯的同系物

蒋健棠英语实用句子(131):We don't have any more pens, can we substitute pencils.

We don't have any more pens, can we substitute pencils. 已经不再有钢笔了，可用铅笔来代替吗？ substitute表示以...代替。注意上句中substitute后的pencils不是被替换的，而是用来替换pens的。如果要明确表明用

发表于:2018-12-25 / 阅读(253) / 评论(0)

蒋健棠英语实用句子

SSS 2011-08-12

This is Scientific Americans 60-Second Science. Im Sophie Bushwick. Got a Minute? What's the best way to find out if an unknown mixture contains a specific substance, like an environmental contaminant? You could use an expensive, bulky gas chromatogr

发表于:2019-01-08 / 阅读(331) / 评论(0)

Scientific American(八)月

旅游英语口语就该这么说:第225期职业工作代班

Could you cover for me on Tuesday? I'm not coming back until Wednesday. 你星期二可以帮我代班吗？我要到星期三才回来。 Sure. What's up? 当然可以，有什么事吗？ He substituted for his colleague who was ill. 他为生病的同

发表于:2019-01-15 / 阅读(254) / 评论(0)

旅游英语口语就该这么说

攻克英语六级阅读3

1.People will come to expect that injured or diseased organs are meant to be repaired from within,in much the same way that we fix an appliance or automobile: by replacing the damaged part with a manufacturer-certified new part. 人们将开始期望受

发表于:2019-01-17 / 阅读(295) / 评论(0)

大学四六级阅读

净化室内空气选这些植物就对了！

Indoor air pollution is a common threat to human health, the new study looked at five common house plants and found that when it comes to removing harmful chemicals from the air, those five plants are better than others. 室内空气污染对人类健康

发表于:2019-02-07 / 阅读(334) / 评论(0)

阅读空间

Stramaccioni: Inter are rediscovering balance

MILAN, Jan. 12 (Xinhua) -- Inter Milan head coach Andrea Stramaccioni said his side are rediscovering their balance following their 2-0 victory over Pescara in the Italian Serie A league at home on Saturday. It went well, because the most important t

发表于:2019-02-11 / 阅读(368) / 评论(0)

英语新闻

用简单英语谈生意－订单篇

(91) A: Are you ready to place your order now? B: The order will be mailed to you next week. A: Is it going to the head office? B: No, I think it is going to be mailed to your local branch. A：你们准备好下订单了吗？ B：下星期就寄给你

发表于:2019-02-11 / 阅读(272) / 评论(0)

实用英语

夏说英语新闻晨读第499期:兔子与绿萝杂交

本期内容： A humble houseplant with a dash of rabbit DNA could help lower our exposure to indoor air pollution, new research suggests. Scientists have revealed that by inserting a rabbit gene into devils ivy the plant is able to clean the surrou

发表于:2019-02-20 / 阅读(322) / 评论(0)

夏说英语新闻晨读

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学英语单词

airlift of aviation fuel