Tube checker
[电] 电子管校验器
🧩 词语组成解析
checker
['tʃekə]
n. 方格图案;
vt. 使（某物）呈现方格图案或不同颜色或不同深浅的方格;
🗣️ 情景例句
I made it myself.
我自己做的。
Action speak louder than words.
事实胜于雄辩。
I smoked with concentration and pleasure as I was sure that this would be my last cigarette.
我聚精会神而又愉快地吸着这枝烟。因为我确信这是我最后一枝烟了。