而有些变异（究竟有多少变异是争论的焦点）其实是没什么意义的，或者可有可无——坦白讲根本就没用。
Some of this variation (exactly how much is the subject of debate) is meaningless, or “neutral” — it has absolutely no effect.
而有些变异（究竟有多少变异是争论的焦点）其实是没什么意义的，或者可有可无——坦白讲根本就没用。
Some of this variation (exactly how much is the subject of debate) is meaningless, or “neutral” — it has absolutely no effect.
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