n.棘輪；棘齒
v.（使）漸進(jìn)
=rachet.
A ratchet allows a heavy weight to be raised in short successive stages. 棘輪可在簡短連續(xù)的步驟內(nèi)就把一個重物抬高。
In a computer, the games are played 100 times, mimicking a ratchet with many teeth. 在計算機(jī)中，這個游戲進(jìn)行100次，以模擬有許多齒的棘輪。
