whilewhile[hwaIl, waIl; wail, hwail]连接词1 a. 当…的时候,在…当中,与…同时We kept watch ~ they slept.当他们睡觉时,我们在看守Don't phone me ~ I'm at the office.我在办公室时,别打电话给我W~ (he was) fighting in Germany, he was taken pris ...