“共缩”的英语可以翻译为：cocondensation ...

“浓缩”的反义词：稀释。...

“缩回”的英语可以翻译为：etraction，anastole，draw back，retract，retractation ...

船长命令船员缩帆.The captain ordered his men to shorten sail.黑色的缩帆散开过海湾, 当潮流波浪跳跃时,不明显地出现.Black reefs scatter over the bay, appear indistinctly as the tide waves leap....