Be careful, the mule is a vicious beast, not safe abaft the beam. 当心,骡子是一种险恶的畜牲,(站在)它后面不安全。
Stow the luggage aft; ships with square sails sail fairly efficiently with the wind abaft; the captain looked astern to see what the fuss was about. 把行李装到尾部上;带有方形帆的船随风疾驰而去;船长到船的尾部看看发生了什么事。