They offered their house for sale for thirty thousand dollars.

　　他們出售房子，要價三萬美元。

　　His income to-day is at least thirty thousand a year.

　　而他今天的收入每年至少是三萬。

　　Well, in round figures we've spent twenty thousand so far.

　　嗯，說個約數(shù)吧，我們至今花了有兩萬了。

　　Several thousand people marched on City Hall.

　　數(shù)千人涌往市政廳進行抗議。

　　In the worst-case scenario more than ten thousand people might be affected.

　　在最壞的情況下，有一萬多人可能會受到影響。