英語翻譯：

three; several; many
【計】 tri
【化】 trimethano-; trimethoxy
【醫(yī)】 tri-

例句：

1. 他只是一個三歲的孩子。
   He is only a child of three.
2. 海洋幾乎占地球表面的四分之三。
   The sea covers nearly three-fourths of the world's surface.
3. 她用功的程度是我的三倍。
   She studies three times as hard as I.
4. 他用功的程度是我的三倍還不止。
   He studies more than three times as hard as I.
5. 他的財富是我的三倍還不止。
   He is more than three times as rich as I.
6. 這條街比那條街寬三倍。
   This street is three times wider than that one.
7. 我已經(jīng)寫了三個小時了。
   I've been writing for three hours.
8. 我學(xué)西班牙語已經(jīng)三個月了。
   I've been studying Spanish for three months.