Sizeof
n. 运算符；大小
🗣️ 情景例句
Nothing to worry about.
没有什么好担心的。
Yes, a lot of friends.
是的，很多。
Don't worry! We won't leave before nine. We'll wait for you outside the school gate!
别担心！9：00前我们不会出发。我们将在学校的大门外等你！