youdao

Transformation: a request for a service may originate on one protocol, but the service may be invoked in some other protocol by using the transformation function.

转换：服务的请求可能源于一个协议，而通过使用转换功能可以用一些其它的协议调用服务。

youdao

However, this function alone isn't useful enough to make the protocol worth learning.

然而，单单这个函数并不足以使这个协议值得去学习。

youdao

That's because lactation is probably the only bodily function for which modern medicine has almost no training, protocol or knowledge.

CNN: Is the medical community failing breast-feeding moms?