pass first在游泳里是什么意思是在这道题里的:2 swimmers at opposite ends of a pool decide to race each other over 2 lenghths.They started at the same time,and when they pass first they are 20m from the end at which A started.When they
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![pass first在游泳里是什么意思是在这道题里的:2 swimmers at opposite ends of a pool decide to race each other over 2 lenghths.They started at the same time,and when they pass first they are 20m from the end at which A started.When they](/uploads/image/z/12508412-68-2.jpg?t=pass+first%E5%9C%A8%E6%B8%B8%E6%B3%B3%E9%87%8C%E6%98%AF%E4%BB%80%E4%B9%88%E6%84%8F%E6%80%9D%E6%98%AF%E5%9C%A8%E8%BF%99%E9%81%93%E9%A2%98%E9%87%8C%E7%9A%84%EF%BC%9A2+swimmers+at+opposite+ends+of+a+pool+decide+to+race+each+other+over+2+lenghths.They+started+at+the+same+time%2Cand+when+they+pass+first+they+are+20m+from+the+end+at+which+A+started.When+they)
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