[] a person or thing that tests sth试验者；检查者◆He started as a code tester for a software firm.他最初是一家软件公司的代码检测员。◆The modem comes with a phone-line tester.这款调制解调器带有电话线检测器。a small amount of a product that you can try to see if you like it试用品◆They are giving away thousands of perfume testers in their latest promotion.他们在最近的促销活动中派发了上千份试用装香水。