I can't get the screw to turn.

我拧不动这个螺丝钉。

《牛津词典》

Humans turn a screw to make it move along its length, but the weevil's muscles pull along the length of its leg to make it turn.

人类旋转螺丝使其前进，而象鼻虫的肌肉沿着腿的方向牵拉，使其旋转。

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Muscles control how much the leg can turn on the screw threads, the researchers report online today in Science.

肢体通过这种螺旋纹的旋转受到肌肉的控制，科学家今日已于科学在线报道了这一成果。

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One possible explanation, which I find the most likely, is that they were seeking one more screw to turn on the accused, pushing for a guilty plea and cooperation against others.

FORBES: A Pawn in Their Game

O'Gara punished the European champions with his fourth penalty as Munster continued to turn the screw.

BBC: Munster 19-3 Wasps

The economists warned that ring-fencing some areas would "turn the screw" on every other sector that did not benefit from that concession.

BBC: Study warns of 'age of austerity'