Disphenoid
復(fù)正方楔; 雙半面晶形
??? 情景例句
What number do I dial?
我應(yīng)該撥哪個(gè)號(hào)碼呢？
You must be hungry. Shall we get something to eat?
你一定餓了，我們吃點(diǎn)東西好嗎？
He has never borrowed money from me.
他從未向我借過錢。