| 单词 | be in service |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔service〕Her family had been in service for seven generations.做佣人麦克米伦高阶〔service〕The battleship has been in service since 1965.1965年以来，这艘战舰一直在服役。剑桥高阶〔service〕These trains have been in service for many years.这些火车已经使用很多年了。朗文当代The battleship has been in service (= used) since 1965.自从1965年来，这艘战舰就一直在服役。剑桥国际 |
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