我再也无可奉告了，这本是重大的秘密。I can't say any more, it's meant to be a big secret.他猜测说有些人也许能够察觉重大灾难。He conjectured that some individuals may be able to detect major calamities.他管理上的重大失误使公司陷入亟须重组的境地。His gross misman-agement...
一声尖叫打破了这可怕的沉寂。The unearthly silence was broken by a shrill screaming.直升机的嗡嗡声打破了沉寂。The silence was broken by the whirring of a helicopter.接着又是一阵短暂的沉寂。Again there was a short silence....
煮20分钟，直到液体体积减半。Boil for 20 minutes until the liquid has reduced by half.铁路旅费对儿童减半.Railway fares are reduced by half for children.他们把人员减半以减少支出.They retrenched by eliminating half the workers....