Every passport holder is given an allowable expense.

每位护照持有者都有一笔可免税的消费。

A certain level of error between the calculated result and the actual result is allowable.

计算结果与实际结果有一定程度的误差是容许的。

It is allowable in some countries for teenagers to get married at the age of 16.

在一些国家法律允许青少年16岁结婚。

Capital punishment is allowable only under exceptional circumstances.

只有在特殊情况下才允许判死刑。

What exactly are the allowable values?

哪些值是真正被允许的？

Rules governing the allowable values of the type.

控制类型允许的值的规则。

It's now 20 times the allowable amounts in the US and Europe.

现在的总数是美国和欧洲许可数量的20倍。

You can create a schema that specifies all of the allowable values (see Listing 4).

我们可以创建一个模式，让它指定所有允许输入的值(如清单4所示)。