When a person somehow barely makes it through a risky situation, one might say
they made it by the "skin of their teeth." Of course, teeth have no skin, so
the implication is that it really could have gone the other way. If you are th
inking there is a sliver of a chance that you will succeed with a big risk you
are considering, Gemini, you might want to reconsider. At the very least, you
need to think it through from beginning to the end, and figure out if you cou
ld handle either scenario.
当某个人以勉强挺过危险的情况时，有人也许会说他们是侥幸成功（勉强完成）。
当然，牙齿没有皮肤，所以它意味着他可以走另一条路。
如果你认为你可以冒着巨大的风险获得成功，双子们，你可能需要重新考虑。
至少，你需要从头到尾仔细考虑，并且厘清你是否可以处理任何一种情况。
Ps. 如果有误译请指教，谢谢。