🧩 词语组成解析
subclass
['sʌbˌklɑ:s]
n. 亚纲，子集;子类;
n. [植] 菊亚纲
🗣️ 情景例句
Sit down, Robbie. Let's get to work.
坐下来 ，Robbie， 让我们开始做功课吧。
Do you ever do exercises on Saturday?
你曾经在星期六做练习吗？
He slept very well for the first two nights,
头两天晚上，他睡得非常好。