now and then
... northeastern adj (在)东北的;向东北的;来自东北的 now and then 时而;不时;偶尔 nuclear adj 核子的;原子能的 ...
every now and then
... ever since尔后一直,从那时侯起一直 every now and then时而,偶然 every other每隔一个 ...
off and on
... 时而;有时:once in a while b 时而;断断续续地:off and on 时代;纪元:epoch ...
Sometimes
在车手榜上最能挟制罗西榜首(First place)身分的对手未能趁他再现平常时而(Sometimes)取而代之,对罗西而言(Case)是光荣的事。
China will act according to how things proceed.
A wise man changes his way as circumstances change;a knowledgeable person alters his means as times evolve.
A wise man changes as time and circumstances change.
"时而"是个多义词,它可以指时而(汉语词语),时而(段林希、李斯丹妮演唱歌曲)。