Tetartohedral
a. 具有四分之一结晶体对称面的
🗣️ 情景例句
I did , but everything is OK,so I decided to come back.
回去了， 但一切安好。于是我决定回来。
When will the contract be ready?
合同何时准备好？
A robot-arm from the Endeavour will grab the telescope and hold it while the astronauts make the necessary repairs.
当宇航员进行必要的修复工作时，“奋进”号上的一只机器手将抓住望远镜并托住它。