Bilestone
n. 胆石
🗣️ 情景例句
What impressed you the most about Shanghai?
你对上海最深的印象是什么？
OK. Your plans are always successful.
OK，你的计划常常无往不利！
as the wave leaves the particles behind back to its starting point again.
当波浪把微粒留在身后时又回到出发点。