at a time的意思

at a time的音标：at a time的英式发音音标为：[æt ə taim]at a time的美式发音音标为：[æt e taɪm]...

Niccolini was thundering up the stairs, taking them two at a time.尼科利尼一步两个台阶地噔噔跑上楼。Add the cream a few drops at a time.每次加几滴奶油。For months at a time, air raids were a nightly occurrence.一度有几个月，每天晚上都会发生空袭。...