guard boat

同根派生

英汉例句

• The fast cruiser soon overhauled the old cargo boat.
  快速巡逻艇迅即赶上那艘旧货船。
• The patrol boat was ordered to stand by the sinking ship.
  巡逻艇奉命留在那快要沉没的船只附近，以便进行救助。