Selection is the act of selecting one or more people or things from a group.
例句
...Darwin's principles of natural selection...达尔文的自然选择理论Dr. Sullivan's selection to head the Department of Health was greeted with satisfaction...人们对沙利文博士当选卫生部部长表示满意。
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挑选出来的一批人(或事物)
A selection of people or things is a set of them that have been selected from a larger group.
例句
...this selection of popular songs.这张流行歌曲选集...a dramatic rendition of selections from Dickens' A Christmas Carol.以戏剧形式演绎的狄更斯《圣诞颂歌》节选片段
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(商店内)可供挑选的某类商品
The selection of goods in a shop is the particular range of goods that it has available and from which you can choose what you want.
例句
It offers the widest selection of antiques of every description in a one day market.它在为期一天的集市上出售应有尽有的各种古董。