When the concave upper nut is tightened, the effect produced is exactly the same as that produced by a hammer driving in a wedge.

当上螺母的凹面与之锁紧时，其效果与用一个锤子敲进一楔子的效果完全相同。

youdao

It takes some time to get accustomed to swinging the hammer - it is a much different technique than driving nails!

需要花点时间来熟悉挥动力锤—它是一个不同于楔钉子的技术活！

youdao

A hammer is used for driving [to drive] in nails.

锤子是用来钉钉子的。

youdao

"Pets that are out of their comfort zones can have behavior problems in the car, which can be dangerous while driving, " says Hammer.

CNN: Tips for road tripping with pets

Finch Foundry is a traditional 19th Century working forge powered by three water wheels driving a huge tilt hammer and grindstone and has been owned by the National Trust since 1994.

BBC: Devon - Get fired up at foundry day