If there is only one such possible match then return it.
如果只有一个这样的匹配,那么就返回它。
Every personal trainer is different and you need to do some research to find the best possible match.
每个教练都有各自不同的特点与风格,你必须选中最适合自己的人做自已的教练。
If there is still more than one possible match remaining, then they are indistinguishable; return the first one found.
如果仍然存在多于一个可能的匹配,那么它们就是没有分别的;返回第一个找到的匹配。
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