Water can be purified by boiling for five minutes.水煮沸5分钟便可得到净化。She embroidered on this theme for about ten minutes.她围绕这个主题添枝加叶地说了大约10分钟。They sat talking and necking in the car for another ten minutes.他们在车里又坐了10分钟，边说边搂着亲热...
绅士应该总是彬彬有礼,即便是对地位不及自己者.A gentleman should always be civil, even to his inferiors.这部歌剧不及他晚期作品娴熟。The opera lacks the polish of his later work.为什么他今年表现不及往常呢？How come he hasn't been able to be as good this year?...