Optical indicator
[机] 光学指示器
🧩 词语组成解析
indicator
['ɪndɪketɚ]
n. 指示器;[化]指示剂;指示者;
🗣️ 情景例句
No. He left a note on the door
是的。他留了一张条子在门上
The world is a ladder for some to go up and others to go down.
世界好似一把梯，有人上去有人下。
One half of his money and his goods shall be given to the city of Venice and the other half shall be given to the person he has tried to kill.
他的钱和财产的一半必须给威尼斯城，另一半必须给他企图杀害的人。