If so, we return zero because the sum of all members of an empty list is zero.

如果是，则返回零，因为一个空列表的所有成员的和为零。

youdao

Under the first rule, a zero in the list indicates a break between blocks.

在第一个规则中，列表中的零表示块之间的间断。

youdao

The first if statement breaks the recursion if the list is empty, returning zero.

第一个 if 语句在列表为空的情况下中断递归，返回零值。

youdao

So, what's the idea? If I know what my hash function does, it maps, in this case characters into a range zero to 256, which is zero to 255, I create a list that long, and I simply mark things.

我知道我的哈希函数做什么,在这个例子中，它将字母，映射成0到255的256个数字，我创建了一个这么长的列表，并且我只是简单的标志这些东西。

麻省理工公开课 - 计算机科学及编程导论课程节选

These remarkable fellows persuaded otherwise sensible citizens to suspend disbelief long enough to sell a product of zero value that claimed an exhausting list of miraculous cures and benefits without any evidence whatsoever that the product was either safe or effective.

FORBES: The Rebirth Of The Snake Oil Salesman On Wall Street

What it does offer is an arm-length list of firsts for Sub-Zero.

FORBES: The Sub-Zero PRO 48 puts the cool in cold storage.

Their sales force have zero experience in that kind of service and the competitors list is much longer than in the article.

FORBES: PerkinElmer Enters DNA Sequencing Market