如果余数不为零，则该数不是素数。

If this number is ever zero, the number is not prime.

youdao

问题是，真实世界里的交易费用绝不为零。

The question is that in the real world, transaction cost can never be zero.

youdao

因为零售商之间缺乏竞争，瑞士买家不得不为之付出更多的钱。

Buyers in Switzerland have to pay more because there is less competition between retailers.

youdao

因为零售商之间缺乏竞争，瑞士买家不得不为之付出更多的钱。

Buyers in Switzerland have to pay more because there is less competition between retailers.

youdao