🧩 词语组成解析
subclass
['sʌbˌklɑ:s]
n. 亚纲，子集;子类;
鳃足类
🗣️ 情景例句
It's for a book.
是为一本书拍的。
I'll let you know if anything comes up.
如果发生了什么事，我会让你知道。
What's the time?
几点了？