今天第一弹，一会再更新张（老虎），献给新年。
Today, a McDonalds will update Zhang (tiger), dedicated to the new year .
选择不同跑步路面的原因，效果和调整，系列第一弹！
This is the 1st part of a series on the cause, effects, and adjustments to different running surfaces.
选择不同跑步路面的原因，效果和调整，系列第一弹！
This is the 1st part of a series on the cause, effects, and adjustments to different running surfaces.
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