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。They had to plod wearily on up the hill.他们不得不迈着疲倦的步子登上山.to plod through mud在烂泥里吃力地走He was destined to plod the path of toil....
Who occasioned his anger?谁惹他生气?His queer behaviour occasioned a good deal of talk.他的古怪行为引起众多的谈论....the change of lifestyle occasioned by the baby's arrival.由于孩子的降生而引起的生活方式的改变The dean's illness occasioned much m...