Orbi
[医]轨道，环绕
🗣️ 情景例句
Some people seem too think its for practicing grammar rules and learning lists of words.
一些人认为它是用来操练语法规则和学习一大堆单词。
We kept on discussing the problem for four hours.
我们持续讨论那个问题达四小时。
He is swimming across the river.
他正横渡小河。