Although climate change gets ample attention, species loss and nitrogen pollution exceed safe limits by greater degrees.
虽然气候变化引起了足够的重视,然而物种灭绝和氮污染的程度已经十分严重。
So, remember: what we saw last time or in the first lecture is that, to rotate a vector by 90 degrees, we should change to.
所以记住,在上次课还是第一节的时候我们知道,要把一个向量旋转90度,我们要把变成。
By cutting carbon dioxide emissions as well as controlling soot and methane, the global temperature change could be kept under 2 degrees Celsius (4 degrees Fahrenheit) in the short term.
就短期来看,在减少二氧化碳排放量的同时控制烟灰和甲烷的排放将使全球气温变化控制在2摄氏度(4华氏度)以内。
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