Diffs
(diff 的复数) abbr. 扩散器（diffuser）；[数]微分；差速器（differential）
🗣️ 情景例句
We can write letters. It's cheaper than calling.
我们可以写信就好，那比打电话便宜。
Would he have seen you if you hadn't waved to him?
如果你没向他招手他会看见你吗？
He lands on top of each house and climbs down the chimney into the fireplace.
他降落在每一家的房顶，顺着烟囱爬进壁炉。