这一承诺能维持多久还不确定。It is an open question how long that commitment can last.南希不确定德克是不是在勾引她。Nancy wasn't sure if Dirk was making a pass at her.如果能重新活过，我不确定自己是否愿意做出任何改变。I doubt I would change anything if I had my time agai...
衡量某事物的标准a yardstick by which to measure sth在他相信某事物之前要先取得证据.He wanted proof before he would believe something.对某人来说,某事物仍然备受争议.Something remains to be a subject of controversy to sb....
We cannot guarantee the punctual arrival of trains in fogy weather.雾天我们不能保证火车准时到达.Liu Lichang is an ancient street. It is famous for old fogy.琉璃厂是一条古老的街, 它以古董著名.I don't want to sound like I'm some old fogy.我不想让...