If you don't know that it has a bug that affects only a few programs, you may build a program and put it in production without knowing that you'll see occasional catastrophic failures.

如果您不知道它现在有一个只会影响少部分程序的bug，您可能会编译一个程序并将其发布为产品，而没有意识到这样您将会遇到偶然的灾难性错误。

youdao

Without knowing unique attributes of the changed users, it is impossible to construct SQL query statement that retrieve only the changed data from the users table.

在不知道已改变用户的唯一属性的情况下，构造一个SQL声明去users表中重新获取已经改变的数据是可能的。

youdao

The only thing it cannot do is call the put method, and this is because it cannot verify the safety of such an operation without knowing the type parameter t for this Box instance.

它惟一不能做的事是调用put方法，这是因为在不知道该Box实例的类型参数t的情况下它不能检验这个操作的安全性。

youdao

Earmarks -- all these pork projects -- a lot of them, by the way, people like, a lot of them are wastes of money, and we got to be able to distinguish between the two and make it more transparent so that they're not stuck into bills without anybody knowing about it -- (applause) -- but they only cost -- they amount to about 1 percent of the budget as well.

WHITEHOUSE: President Obama Holds a Town Hall in New Hampshire