So when a quasar goes dormant, what's left are the things we associate with a normal galaxy — stars and gas swirling around a central and hidden pit of matter.
Greenhouse gas emissions of tar sands crude are 40% higher than conventional oil, and the open-pit mining has devastated Alberta's boreal forest.
焦油砂的温室气体排放量比普通石油高40%，露天采矿已经极大地破坏了阿尔伯塔的北方气候带森林。
3
The room and the room next to each ball pit village, under the eaves of the hearts of each other sometimes struggle with each other sometimes help busy, have teeth touch, quarrel, and gas.