我们不总能让这些家伙遵守我们下的命令，而我们不清楚这有多少是基因的问题，又有多少只是因为我们没用正确的技巧。
We aren't always able to get these guys to do what they're told, and we don't know how much of that is in the genes and how much is just because we aren't using the right techniques.
我们不总能让这些家伙遵守我们下的命令，而我们不清楚这有多少是基因的问题，又有多少只是因为我们没用正确的技巧。
We aren't always able to get these guys to do what they're told, and we don't know how much of that is in the genes and how much is just because we aren't using the right techniques.
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