Lifetime function
[计] 寿命函数
🧩 词语组成解析
🗣️ 情景例句
Reading childern's literature is an excellent way for the beginning English speaker to improve.
对于刚刚开始学说英语的人，阅读儿童文学读物是个不错的方法。
I'll call the roll before class.
课前我要点名。
On one hand, I was anxious to leave.
一方面，我急于离开山洞。