stowaway /ˈstəʊəˌweɪ/

• 1. 

  N-COUNT A stowaway is a person who hides in a ship, aeroplane, or other vehicle in order to make a journey secretly or without paying. 偷乘者

  例：

  The crew discovered the stowaway about two days into their voyage.

  船员们在航行大约两天后发现了那名偷乘者。