Perimeter function
[计] 周长函数
🧩 词语组成解析
🗣️ 情景例句
during the week--
在本 内
I do not know whether you realize it, but this condition is essential to us.
我不知道你是否了解，但是，这个条件对我们是必要的。
They said that the march had been forbidden, but that wasn't true.
他们说游行向来是被禁止的，但这不是事实。