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推荐辅导班型：2014年自考保过班全新上线 不过免费重修|2014年自考英语签约保过套餐热招
1、黑洞产生很强的引力。
Black holes exert a strong gravitation pull. Gravity
2、由于管理不善，他的公司垮台了。
Because of bad management， his company collapsed.
3、80年代我国发射了多颗卫星。
Our country launched several satellites in the 1980s. (主动)
Our country launched several satellites in the 1980s. (主动)
Several satellites were launched in our country in the 1980s.(被动)
4、药物开始见效了吗?
Has the medicine begun to operate?
5、如果我们认识了黑洞，黑洞就不那么可怕了。
If we understand black holes， they will not be terrible.
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