Toolbelts free both hands and lessen the risk of dropping hammers.
工具带解放了双手，并减少了锤子掉落的危险。
《柯林斯英汉双解大词典》
2
We don't have the strength of chimpanzees because we've given up animal strength to manipulate subtle instruments, like hammers, spears, and later pens and pencils.
The drone of insects is interrupted by a high-pitched drill and the clang of hammers as workers put the finishing touches to the perfectly aligned steel tracks.