如果你没有时间，只需跑一半的时间就能获得和其他运动一样的好处，所以，我们或许都应该尝试一下跑步。
If you are time poor, you need run for only half the time to get the same benefits as other sports, so perhaps we should all give it a try.
我们在下雨前跑在第七的位置，而如果不下雨的话我们大概只能以这个名次结束。
We were running seventh before the rain came and we would have probably finished there if it had been totally dry.
如果我们让跑得最快的人领头儿跑，其它人就会跟不上了。
If we let the fastest runner set the pace the others will be left behind.
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