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
I can't understand a word anyone is saying.
我一句也不明白他们在说什么。
My mother mailed me a parcel.
我妈给我寄了一个包裹。
The tunnel would be well-ventilated if tall chimneys were built above sea level.
隧道就具备了良好的通风条件。