I was pregnant with our third child at the time.

　　當(dāng)時(shí)我正懷著我們的第三個(gè)孩子。

　　The third book in the series is currently in preparation.

　　叢書的第三冊(cè)現(xiàn)在正準(zhǔn)備出版。

　　I read as far as the third chapter.

　　我讀到了第三章。

　　It was the third day running that the train had been late.

　　列車已經(jīng)連續(xù)三天晚點(diǎn)了。

　　Their horse came third in the race last year.

　　他們的馬在去年的比賽中獲得了第三名。