Level 4 · word 5,508 of 20,000
sub
/ˈsʌb/
American

- n. 替补队员, 潜水艇, 订户
- adj. 次级的
- Definition
- n. a substitute player, a submarine, or a subscriber
- adj. secondary or lower in rank
- Example
- He asked the shop to make him a turkey sub for lunch.
- 他让店里给他做一份火鸡潜艇三明治当午饭。