評論
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1.depend on 依靠；取決于
Needy and handicapped people depend on government relief for their support.
窮人和殘疾人依靠政府的救濟維持生計。
2.climate change 氣候變化
Carbon emissions exacerbate the global climate change problem.
碳排放加劇了全球氣候變化問題。
3.come back to 返回
I begged him to come back to England with me.
我懇求他和我一起回英格蘭。
4.human activities 人類活動
These animals became extinct because of climate changes and human activities.
由于氣候變化和人類活動，這些動物逐漸滅絕了。
5.They pumped carbon dioxide gas over the plants in an effort to create the atmosphere of the future.
in an effort to 為了
I spent much of my time bundled up in sweaters in an effort to keep warm.
大部分時間里我都穿著厚厚的毛衣來保暖。
He finally left home in an effort to counter the tyranny of arranged marriage in the old society.
他棄家出走，是對舊社會婚姻壓迫的反動。
6.They set carbon dioxide levels to what scientists are predicting for our planet by the end of the century.
by the end of 到...結(jié)束；到...為止
By the end of the holiday I had spent all my money
到假期結(jié)束時，我已經(jīng)花光了自己所有的錢。
By the end of that first year, I knew how totally unsuited we were to each other.
到了第一年年底，我明白了我們倆根本不般配。
