学个词Learn a Word 第1083课:upgrade

今天我们要学的词是upgrade

Upgrade, 升级。

"The local elementary school received a library upgrade thanks to donations from the alumni association," 校友会的慷慨捐赠,让本地小学图书馆焕然一新。

美国副总统官邸准备加强安全装置。

"The Vice President's official residence is getting a $1.7 million security upgrade," 副总统官邸要进行耗资170万美元的保安系统升级。市场调查显示, "Many customers are putting off plans to upgrade their cell phones during the economic downturn," 经济不景气,使很多顾客推迟手机升级的计划。

好的,今天我们学习的词upgrade...

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