designed to replace or conserve human and especially manual labor;
"laborsaving devices like washing machines"
例句
用作形容词(adj.)
The way to make self-sufficiency work on a small scale is to resist the temptation to buy a tractor and other expensive laborsaving devices.小范围里实现自给自足的途径是抵制诱惑，不去购置拖拉机和其他昂贵的节省劳力的机械。
