One reason is that mathematics builds on itself, so that one missed step can lead to a lifetime of failure.
其中一个原因是由于数学是不断建立在自身基础上，因此人一旦错失其中的一步都可能导致终身数学方面的失败。
I missed out on some once-in-a-lifetime trips. My fiance went all over Europe in college and I am very jealous of her for it.
如果可以就去国外念书，我错过了许多次千载难逢的旅行机会，我未婚妻就曾在大学时游遍欧洲，对此我非常的妒忌。
Study abroad if you can. I missed out on some once-in-a-lifetime trips. My fiance went all over Europe in college and I am very jealous of her for it.
如果可以就去国外念书，我错过了许多次千载难逢的旅行机会，我未婚妻就曾在大学时游遍欧洲，对此我非常的妒忌。
Study abroad if you can.I missed out on some once-in-a-lifetime trips.My fiance went all over Europe in college and I am very jealous of her for it.
如果可以就去国外念书，我错过了许多次千载难逢的旅行机会，我未婚妻就曾在大学时游遍欧洲，对此我非常的妒忌。
Some time missed a, like miss a lifetime.
有些时间点错过一次，就好比错过了一生。
Some things, missed, is a lifetime; some people, a turn, has become forever.
有些事，错过了，就是一辈子；有些人，一转身，就成了永远。摉。
Person's lifetime there are a lot of opportunities, and some missed opportunities when the time Wani, Wani only uncomfortable moment and then laughed over.
人的一生当中有很多机会，有的机会当迩错过的时候，迩只会难受一时然后一笑了之。
There are some things missing, just lifetime missed. People are become, keep a promise, but hold a single fickle heart.
如若没有过去，我现在的天空是否会更加明朗一些。
Had some things to miss, for a lifetime missed.
有一些东西错过了，就一辈子错过了。
Had some things to miss, for a lifetime missed.
有一些东西错过了，就一辈子错过了。
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