Unitor
[电] 单位器
🗣️ 情景例句
OK.
好的。
He gave a lecture on agriculture.
他作了一个关于农业的讲座。
I am used to traveling by air and only on one occasion have I ever felt frightened.
我习惯了乘飞机旅行，只是有一次把我吓坏了。