在臉書上看到有人把手泡在水裡
9個小時!然後根據英國研究這樣
可以增加手的摩擦力更好取物
最近大聯盟又有松焦油事件被抓包
以往被抓的都是在球上做動作
是不是有辦法增加手的摩擦力
讓球速可以變快!理論上這樣會變快嗎
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