It is arguable whether the rebels will knuckle under.还不能确定反叛者是否会投降。The only thing to do was knuckle down and get on with some serious hard work.唯一能做的就是开始努力工作，好好干出点儿成绩来。They refused to knuckle under to any pressure.他们拒不屈从...
Strange vapours burst out of the factory during the accident.事故发生的时候,有奇怪的水汽从工厂里喷出来.His brain was clouded by vapours and dreams.他的脑子里充满空想和梦幻.Noisome vapours arise from the mud left in the docks.难闻的蒸汽由船坞中余留的泥浆散发出来。...