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新东方-柯林斯雅思备考词典
tester
英 [ˈtestə]
[NOUN]
testers
1. [C 可数名词] 测试员
A tester is a person who has been asked to test a particular thing.
2. [C 可数名词] 测试仪
A tester is a machine or device that you use to test whether another machine or device is working correctly.
双语例句
例：I have a battery tester in my garage.
我在车库中有一台电池测试仪。