behind or towards the rear of a ship or aircraft 在(或向)船(或飞机)的尾部 the engine rooms lay astern. 引擎室在船尾。 the lifeboat was carried astern by the tide. 救生艇被潮水甩到船尾。 ■(of a ship's engine) backwards (船的引擎)向后 run the engine hard astern. 开足马力后退。
语源
late Middle English : from a-(expressing position or direction) + stern