Although effort is required to bend a joint or flex a muscle, the body is able to recycle much of the energy expended through spring-like tendons and elegantly arranged muscles.

尽管需要花力气去弯曲关节或拉伸肌肉，但人体可以利用弹簧般的肌腱和分布优雅的肌肉来回收相当部分的能量。

youdao

The spring-back mechanism in the drop bend-forming of automotive glass is introduced, and the finite element model is established.

介绍了汽车玻璃落模弯曲成形中回弹的机制，建立了有限元模型。

youdao

The University of Notre Dame in South Bend, Indiana, which reported one case of H1N1 last spring, is taking extra precautions ahead of the fall semester.

CNN: Swine flu goes to college