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枫下沙龙 / 户外活动 / 发现在小区的沥青马路上,比在水泥的sidewalk上跑步轻松舒服很多,可能表面平整加摩擦力大的原因。安全方面,是逆向还是顺向更安全?
-youngking(EEstor);
2013-9-26
(#8394075@0)
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逆向, you can see the car coming and void accident.
-winewine(酒);
2013-9-26
(#8394177@0)