Dioctahedral
二八面体的(晶体结构)
🗣️ 情景例句
All right. That's it for today.
行了。今天就做这些。
The student felt very shy as he stood in front of the class.
那个学生站在大家的跟前时，感到非常难为情。
When there is no one in the office, you can leave the answering machine on so that people who call you up can leave a message.
当无人在办公室时，你可以打开留言机，这样打电话给你的人就可以留言了。