1. Perhaps you might chance upon the dictionary at some old bookstall. 或许你会在旧书摊上偶然发现这本字典。
2. However it is non official and will be known to people who chance upon it (for now). 然而，它(blog)不是官方的而且将会被碰巧遇到它的人所熟知(对现在来说)。
3. It happened one day that the son of a king, while riding in the forest, came by chance upon the dwarfs' house and asked for a night's lodging. 有天有件事情发生了，一个国王的儿子，当他骑马来到这个森林，偶尔来到矮人们的房子晚上要求投宿。
4. But because most don't have money - what little they had before the flood is now gone - they can't buy anything even if they chance upon a roadside vendor. 但是多数人没有钱-水灾前所有的那么一点可怜的财物都被水冲走了-因此，他们即使碰到路边的小贩子也没钱买任何东西。
5. Assuming the program could guess a different random sequence at the rate of 100 per second, it would take an average of 12 years to chance upon your chosen password. 假设程序能以每秒100种不同随机序列的速度猜测密码，平均要12年才会偶尔猜中您所选的密码。
