Differentials
n. 差异( differential的复数形式 ); 工资级差; （汽车）差动齿轮; 分速器
🗣️ 情景例句
Especially with his teething.
特别是他现在开始长牙。
You've no ideas how much work there is.
你想象不到工作量有多大。
No, I don't.
不知道。