He gave us his solemn word, then he welshed on us.他向我们郑重承诺然后又对我们食言了。She welshed on ( the bargain she made with ) us.她与我们洽谈成交后又翻悔了.He often welshed on his promises.他过去经常逃避义务,不履行诺言....
The locking lever is composed of insulating materials , namely epoxide resin.闭锁杆是由绝缘材料环氧树脂构成.Two of the lorries, carrying industrial resin and paint thinner, burst into flames.其中运载工业树脂和涂料稀释剂的两辆卡车起火了。Several methods chara...