英译汉 At its heart, psycholinguistic work consists of two questions
One is, What knowledge of language is needed for us to use language
In a sense, we must know a language to use it, but we are not always fully aware of this knowledge
A distinction may be drawn between tacit knowledge and explicit knowledge
Tacit knowledge refers to the knowledge of how to perform various acts, whereas explicit knowledge refers to the knowledge of the processes or mechanisms used in these acts
We sometimes know how to do something without knowing how we do it
For instance, a baseball pitcher (投手) might know how to throw a baseball 90 miles an hour but might have little or no explicit knowledge of the muscle groups that are involved in this act
Similarly, we may distinguish between knowing how to speak