Tractrix
等切面曲线, 曳物线
🗣️ 情景例句
That's not an overstatement. As I said, these are only the main ones. There are many others.
你这样说一点也不夸张，我只是说了几个重要的节日，还有很多没有提及呢。
It's unlikely he's here.
看样子他不象在这儿。
He explained that his diet was so strict that he had to reward himself occasionally.
他解释说，他的饮食控制得太严格了，以致不得不偶尔奖赏自己一下。