well-off ['wel'ɔf, -'ɔ:f]

富裕的（形容词，非正式用语）

(adjective, INFORMAL) Either rich, or having a sufficient amount of money to live as one wishes to live.

EXAMPLE: When he sold his company, my friend invested his profit wisely and so he is now quite well-off and can do whatever he wants without worrying about the price.

我朋友卖掉公司，又将利润做了聪明的投资，所以他现在很富裕，能做他想做的事，不用担心价钱。

to totter on the brink of something

在……的边缘徘徊

To be close to a period of sudden disastrous decline, like someone wobbling on the rim of an active volcano.

EXAMPLE: Our petroleum exploration company’s expenses were huge, and we were tottering on the brink of abandoning our efforts until last week when one of our drills discovered oil.

我们这家石油勘探公司开支巨大，原来一直在放弃勘探的边缘徘徊，直到上周我们的一口钻井打出了石油。