"the steamer went astern at half speed"
"the captain looked astern to see what the fuss was about"
"we dropped her astern on the end of a seven-inch manilla, and she laid comfortably on the ebb tide"
以上来源于: WordNet
ADV Something that is astern is at the back of a ship or behind the back part. 在船尾; 在尾部的后面 [技术] ['be' ADV]
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