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precariously adv. 危险地，不稳固地
（unsafe，not firm, not steady）
-His life is not so precarious.
同：dangerous 强调很危险
-Playing with matches is dangerous.
adventurous 爱冒险的
-Robinson crusoe is adventurous.
hazardous 碰运气的，冒险的，
（有变幻莫测之义）
-Climbing the high mountain is hazardous.
rebound v.弹回
-The ball is rebound.
v.产生事与愿违的结果
rebound on / upon sb.
产生对某人不好的影响
-The internet rebound on teenagers sometime.
Rebound (NBA)
抢得篮板球(美校园喜剧《Rebound》)
同：no doubt
beyond doubt
beyond question/ past question
sure enough 果不其然
as is expected 不出所料
-彼得担心自己考不好，果不其然，他不及格。
-Peter was afraid that he had done badly, and sure enough, his grade is failing.
