He welshed on his agreement with the team that he would play for them in February.

他逃避履行他与球队合同中在二月为他们踢球的协议。

He often welshed on his promises.

他过去经常逃避义务，不履行诺言。

A decade after the Latin American country welshed on $81 billion, disgruntled creditors are still chasing their money.

十年前阿根廷这个拉美国家赖掉了810亿美元的债务，至今债权人仍在要账。