“not have a dog's chance”字面上的意思为“没有狗的机会”，这个英语习语引申出来的意思为“毫无机会、机会渺茫、毫无希望”。

【例句】
They do not have a dog's chance of buying a house this year because the bank has refused to lend them any money.
他们今年毫无机会买房子，因为银行已拒绝给他们提供贷款。

His not have a dog's chance of promotion.
他的晋升机会渺茫了。