Subclasses
n. 子类；亚类（subclass的复数）
🗣️ 情景例句
You were right, Grandpa.
给你说对了 ，爷爷。
To promise and give nothing is comfort to a fool.
允诺而不费什么是给愚蠢人的安慰。
I don't think you'll have any difficulty in pushing sales.
我认为你推销时不会有任何困难。