Each year,scientists work to develop a unique influenza vaccine to protect people against the strain expected in the coming flu season.

VOA: standard.2010.07.21

Because it takes three units where there's only four choices at each position to have at least 20 unique combinations.

因为每个位点上仅有四种可能性,只有采用三个碱基一组,才能取得至少二十种不同的组合方式

耶鲁公开课 - 生物医学工程探索课程节选

It depends on the piece. Each piece is very unique.

这个根据作品而定。每部作品都是独一无二的。

灵感从何处来 - SpeakingMax英语口语达人

He explains that each medal is unique none of the 615 Olympic and 339 Paralympic medals is identical.

VOA: standard.2010.02.16

It's a geometric factor that's unique for each crystal structure.

特有的几何参数,对不同晶型而言。

麻省理工公开课 - 固态化学导论课程节选

Because of their unique surface, each medal is struck with 12 dies nine times with 1,900 tons of pressure, the weight of more than The native designs were laser-engraved on each medal.

VOA: standard.2010.02.16