Pentaborate
五硼酸盐
🗣️ 情景例句
and 83 is to the right, about two houses. 83
号是在右边 大约过两栋房子就到了。
Internet is number one!
国际互联网真是顶呱呱！
It is used by travellers and business people all over the world.
在世界各地的旅行者及商人都用英语。