Bipyramidal
双锥体
🗣️ 情景例句
Did you finish the ...?
你完成了……吗？
You'll cut yourself, if you don't take care.
你不专心的话，就会割到你自己。
Sorry! It's not a very good line. Could you speak more clearly, please?
对不起！电话线路不太好。你能说清楚一些吗？