The referee blew his whistle for a penalty.裁判鸣哨判罚.Hugh listened to the whistle of a train.休听着火车呼啸而过。Polly blinked and emitted a long, low whistle.波莉眨了眨眼，吹了一声低沉而悠长的口哨。...
The feed-pipe is as clean as a whistle, so I’m afraid, if the oil is not getting through to the burner, the valve must be faulty.送料管干干净净, 所以我担心要是油不通过喷嘴, 阀门一定有毛病。Hugh listened to the whistle of a train.休听着火车呼啸而过。Blowing i...
Aircraft production continued to plod along at an agonizingly slow pace.飞机制造业仍旧举步维艰，发展速度之缓很让人头疼。He was destined to plod the path of toil.他注定要在艰辛的道路上跋涉.They had to plod wearily on up the hill.他们不得不迈着疲倦的步子登上山....
We are here to protect and assist the weak and infirm.我们来这里保护、帮助年迈体弱者。care for the elderly and infirm对年老体弱者的照顾He was over eighty years of age, infirm and totally blind.他八十多岁了,身体虚弱, 双目失明....