It is high time to make an artificial ant hill which should consist of a gypsum block with available passages and rooms facing the arena.
是到了建造一个人造蚁丘的时候了，这个蚁丘有通风的走廊和面向平台的房间。
2
Artificial lights block formation of molecules that bond with air pollutants to clear the air.
人工照明系统阻碍了空气污染物与水分子的结合，起到了净化空气的作用。
3
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