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
Three months ago.
三个月之前。
I heard the clock, but I didn't get up until 9.
我听见闹钟了，但我捱到九点才起。
Though it may be possible to measure the value of material good in terms of money,
虽然物质产品的价值可以用金钱来衡量，