🧩 词语组成解析
subclass
['sʌbˌklɑ:s]
n. 亚纲，子集;子类;
双弓型
🗣️ 情景例句
Show some courtesy or I shall cease dealing with your company.
请客气些，否则我将停止与你们公司打交道。
Please be serious for a minute, this is very important.
请严肃点，这件事很重要。
Do we have to wear the helmets?
我们得戴上防护帽吗？