He was quite unable to reproduce the same movement.

他不能复制同一个动作。

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Researchers say that some years these birds are completely unable to reproduce.

研究员们说过些年这些鸟将会完全的失去繁殖的能力。

youdao

Thsy were unable to reproduce the results of the first experiment when they repeated it.

他们在做这个实验的时候，得不出第一次实验的结果。

youdao

And it has promised the Food and Drug Administration that it would only market female salmon unable to reproduce.

VOA: special.2010.10.05

Early experiments suggested that an antisense drug could precisely target cancer cells, but Crooke was unable to reproduce this nascent work in his SmithKline lab.

FORBES: Antisense and Sensibility

The sterile flies (raised in special laboratories in Guatemala and rendered sterile with gamma rays) are expected to mate with females which, of course, will be unable to reproduce.

ECONOMIST: Florida agriculture

Hook was unable to reproduce his sparkling form of the Six Nations, struggling uncharacteristically with his place-kicking, but it is unthinkable that the Osprey will not play in the World Cup.

BBC: Jenkins hints at World Cup places