第三组被称为黄昏组：他们在黎明和黄昏的微光中茁壮成长，而在其他时间则不活跃。
A third group are known as crepuscular: they thrive in the low light of dawn and dusk and remain inactive at other hours.
有时它默许批准实施的事实，而在其他时间却设法扭转这一进程。
At times it has acquiesced in ratifying the facts on the ground, while at other times has sought to reverse the process.
例如， 只在一定时间而在其他时间不出现的对眨眼反射作出的反映。
At certain times but not at others, for example, they are capable of passing the eyeblink test.
应用推荐