1....conducted a series of tests on mice to ascertain the effects of stress on the rodents.
ascertain確定
Through doing this, the teacher will be able to ascertain the extent to which the child understands what he is reading
這樣一來,老師就能確定孩子們對他所讀的內容理解多少了 。
2.This caused a hair-colouring pigment in the mice to go into overdrive as a reaction to the stress and deplete colour-regenerating stem cells.
deplete耗盡
They fired in long bursts, which depleted their ammunition
他們長時間開火,耗盡了彈藥 。