Hemihedry
半对称; 半面体
🗣️ 情景例句
Please don't do it without asking.
未经允许请不要那么做。
How many sisters and brothers do you have?
你有几个姊妹和兄弟？
This is Wei Hua. Wei Hua, this is Jim.
这是魏华。魏华，这是吉姆。