例句：
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)。
The allowable content of a WSDL document is controlled by the WSDL specification.
WSDL文档所允许的内容要受到 WSDL 规范的约束。
The window is the maximum allowable drift between the client clock and the server clock.
窗口是在客户端时钟和服务器时钟之间所允许的最大偏差。