Unpolluting
(unpollute 的现在分词) 未污染
🗣️ 情景例句
What was it about?
刚才谈什么？
My name is Jones.
我姓琼斯。
and then there are three thousand million other Milky Ways, or galaxies, in the universe.
况且在宇宙中还有30亿个天河，即银河系。