Undation
陆地或海底大面积的上升或下降运动
🗣️ 情景例句
It's called
它的题目是
You may know the horse by his harness.
欲知马如何，可看套马索。
Ethanol is more effective at a concentration of 50-70 percent;
乙醇的浓度为50％至70％时比较有效，