astern是什么意思 adv. 在船尾, 向船尾 r. stern foremost or backwardr. (of a ship or an airplane) behind astern的用法和例句: 1. We're currently 15 miles astern of the vessel. 我们目前在逃逸船只的后方约15海里处 2. All right, engine astern 3, reduce speed ov...