Crossflow velocity
[化] 横流速度
🧩 词语组成解析
交叉[横向]流动
🗣️ 情景例句
Lacks courtesy is ill-mannered.
不礼貌，举止不当。
If he doesn't, will you buy one?
如果他不，你会买一个吗？
At lunchtime, the tourist thanked him and gave him ten pounds, which was a lot of money in those days.
午餐时，这位游客向他表示感谢，并给了他10英镑。这在当时可算是一大笔钱了。