游泳三难定律:游泳的时候,以下三个目标只能同时完成其中两个—— (a) 保持速度; (b) 思考问题;和 (c) 记得圈数。

Please be advised that this post was written or last updated a while ago and may therefore contain outdated information or opinions I no longer hold.
请知悉本文自写作或上次更新已届相当时限,或包含过时信息及观点。