Downstroke
[冶]下行程(結晶器), [機]下行沖程
??? 情景例句
He tried to smile.
他設法要微笑。
We've priced it at $ 98, almost 30% less than the competition.
我們訂價為98美元，幾乎少于競爭對手30%。
Can I come, too?
我也可以一起去嗎？