🧩 词语组成解析
subclass
['sʌbˌklɑ:s]
n. 亚纲，子集;子类;
[医] 挠足亚纲
🗣️ 情景例句
having to take care of the baby all weekend.
整个周末照顾孩子。
Are there reserved seats on the train?
车上有预订座位吗？
So there were many people in the doctor's waiting room.
所以医生的候诊室里有很多人。