a person who tests something, especially a new product
(尤指新产品的)试验者;测试者。
a person who tests another's proficiency
考官。
a device that tests the functioning of something
测试器,测试仪
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a mains tester .电源测试器。
a sample of a product provided so that customers can try it before buying it
试用(产)品。
a canopy over a four-poster bed
(床的)天盖,华盖。
"late Middle English: from medieval Latin