This can be done by tinkering with their genes.
这可以通过对它们进行基因改造来实现。
But others say he's just tinkering, re-engineering.
但其他人说，他这只是在修修补补，是在搞重组再造。
Some tinkering to suit local needs may be possible.
一些适应当地需求的努力还是有可能的。
Stop tinkering with that clock and take it to the repair shop.
别摆弄那只钟了，把它送到修理店去修吧。
The most important factor is I like tinkering with machines.
最重要的一个因素就是我非常喜欢摆弄机械。
If we accept this kind of tinkering, can't we accept cloning?
如果我们接受这种修补，那么我们为什么不能接受克隆呢？
But that is an argument for scrapping it, rather than merely tinkering.
但这是放弃的理由，不是修补。
But such tinkering, effective though it sometimes is, may no longer be enough.
不过，这样的微调举措尽管有时也是有效的，但可能再也不够了。
Too much damage to or tinkering with an item would, of course, raise suspicions anyway.
当然，过分损坏或经过修补的物体会引起怀疑。
Brian: Oh, nothing in particular, I guess, I always like mathematics and tinkering with machines.
布莱恩：嗯，我想没什么特别的原因，我一向喜欢数学和修理机械。
Brian: Oh, nothing in particular, I guess, I always like mathematics and tinkering with machines.
布莱恩：嗯，我想没什么特别的原因，我一向喜欢数学和修理机械。
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