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 UID94145 帖子2194 积分2526 学分15866 个 金币3 个 性别男 在线时间259 小时 
 
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                 hard  They tried hard to succeed. 
 adv. 努力地,艰苦地 他们努力地工作以求得成功。
 
 identify The markings are so blurred that it is difficult to identify.
 
 v. 认出,识别 标记模糊不清,难以识别。
 
 kick Don't kick the ball into the road.
 
 v. 踢 不要把球踢到马路上。
 
 lag Let not a single classmate lag behind.
 
 v. 落后,掉队 不要让一个同学掉队。
 
 machine Levers and pulleys are simple machines.
 
 n. 机器,机械 杠杆和滑轮是简单机械。
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