One of the 20 different organic molecules that are joined together to form a polypeptide chain or a protein the twenty amino acids share a common backbone, but each has a specific side-group.

20种不同的有机分子结合起来组成多肽链或蛋白质。这20个氨基酸主结构相同，但每种又分别有各自不同的侧基团。

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A group of corn farmers stands huddled around an agronomist and his computer on the side of an irrigation machine in central South Africa.

南非中部，一群玉米农挤成一团，围着一名农学家和他放在灌溉机旁的电脑。

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Everyone on this side of the room is Group A, and the rest of you are Group B.

房间这边所有人都是 A 组，你们剩下的是 B 组。

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What do I have to do to this class-- this side of the class to put you in a different group from this side and different from that side?

我要对这个班做什么-,才能让坐在这一边的同学,和坐在那边的同学处于不同的群体？

耶鲁公开课 - 心理学导论课程节选

But 13% of patients on the high-dose group discontinued because of side effects during the first year, compared with 9% in the lower-dose group and 7.2% on placebo.

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Premier League Everton shrugged off the loss of 10 first team players to record a superb 2-1 Group I victory at Belarussian side BATE Borisov -- their second successive win.

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In a report last week, Tim Anderson, a sell-side analyst at Prudential Equities group, predicted that the Premarin trial would be ending early (see " Wyeth's Premarin Trial Seen Ending Early").

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