This stock quote service implementation returns unique values for the symbols XXX and YYY, and returns zero for anything else.

这个股票报价服务实现为符号xxx和yyy返回唯一的值，对别的符号则返回零。

youdao

If the two items are equal, the function returns zero.

如果两个项相同，函数返回零。

youdao

Run a command only if another command returns a zero exit status.

仅当另一个命令返回零退出状态时才运行某个命令。

youdao

Let's put zero here because these are not gross returns these are returns, so they're often negative.

这里做零点,注意这不是总收益,而是年度收益,有可能是负数的

耶鲁公开课 - 金融市场课程节选

Only the operating system has controlling of byte zero NULL in the computer's RAM and so if a function ever returns null, aka zero, well, something must have gone wrong because that can't possibly belong to me that memory because by human convention zero is owned by the operating system; not by a program I wrote.

只用操作系统在内存中能够控制,字节0，并且如果一个函数返回，或者说0，好的，可能出错了,因为那可能是不属于我的内存,因为惯例上，0是由操作系统拥有的,而不是由我的程序拥有的。

哈佛公开课 - 计算机科学课程节选

That leaves fixed income, and U.S. bonds have zero returns, so where do you park a million dollars without losing it?

FORBES: Where To Park A Million Dollars (Or $1,000)

There is high unemployment and ordinary savers are getting close to zero returns, while many young people and not so young people are crushed by non-dischargeable student debt.

FORBES: Should We Care About Romney's Unreleased Tax Returns ?

In conclusion, Romney might have some zero tax returns either by accident or on purposes.

FORBES: Some Zero Tax Romney Returns Would Be As Shocking As Gambling At Rick's