Total variation
[计] 总变分
🧩 词语组成解析
🗣️ 情景例句
Oh, this is my father. He's a doctor.
噢， 这是我父亲， 他是一名医生。
Can I do anything for you?
我能不能为您做些什么？
It took the police nearly an hour to get the traffic on the move again.
警察花了将近一个小时才使车辆又开起来。