Oscilloscopy
示波术
🗣️ 情景例句
My account number is ...
我户头号码是…
Truth needs no colour; beauty, no pencil.
真理不些要色彩，美丽不需涂饰。
I used to travel by air a great deal when I was a boy.
我在幼年的时候，曾多次乘飞机旅行。