Level 4 · word 5,508 of 20,000

sub

/ˈsʌb/ American
Picture: sub
  • 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。