Pien
尖稜; 稜角
🗣️ 情景例句
What are you talking about?
你在说什么呀？
I'll need an economy ticket with an open return.
我要一张经济舱，回来时间不定的来回票。
has spent his lifetime studying active volcanoes and deep caves in all parts of the world.
花了毕生的精力来研究世界各地的活火山和探洞。