| 单词 | 系统升级 |
| 释义 | DEFINITIVE EXAMPLES 权威例句〔IMPROVE〕It was decided that the entire computer system should be upgraded. 已决定将整个电脑系统升级。朗文写作活用〔road〕You can always upgrade a bit further down the road if you want.今后如果你想将计算机系统升级就能升级。朗文当代〔upgrade〕The office is upgrading the telephone system.办公室正在给电话系统升级。韦氏高阶 |
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