This is the most powerful test of the new engine.
这是对这台新发动机最有力的检验。
History shows that crisis can be the most powerful test of a leader’s character, because decisions made under pressure reveal what routine success can hide.
历史表明,危机可能是对领导者品格最严峻、最有力的考验,因为压力下的决策会暴露出日常成功所掩盖的东西。