• n. 潛水艇；地鐵；替補隊員
• vi. 代替

縮寫自 substitute,代替，替代。

sub (n.)

shortened form of substitute (n.), 1830; the verb in this sense is from 1853. Related: Subbed; subbing. From 1917 as short for submarine (n.).

1. Residents in general are poor and undereducated, and live in sub-standard housing.

居民們普遍都很貧窮，受教育程度低，居住條件較差。

來自柯林斯例句

2. Men carrying sub-machine guns seized the five soldiers and drove them away.

持沖鋒槍的幾名男子俘虜了5名士兵并開車將他們帶走。

來自柯林斯例句

3. The big losers will be the undeveloped countries, especially sub-Saharan Africa.

受害最深的將是不發達國家，尤其是非洲撒哈拉沙漠以南地區。

來自柯林斯例句

4. Several other sub-species of gull are found in the region.

在該地區還發現了海鷗的其他亞種。

來自柯林斯例句

5. They're armed with sub-machine-guns or machine-pistols or whatever you call those things.

他們持有輕機槍或者沖鋒槍，還是什么玩意兒的。

來自柯林斯例句