know-how
n. 诀窍; 实际知识; 专门技能; 专有技术
Know-how is knowledge of the methods or techniques of doing something, especially something technical or practical.
He hasn't got the know-how to run a farm.
他没有经营农场的专业知识。
...technical know-how.
专业技术知识
1. the (technical) knowledge and skill required to do something
Sailors know how to wind up a long rope neatly.
水手们知道怎样把一条大绳利落地缠好.
He doesn't know how to dispose of his spare time.
他不知如何打发空余时间.
I don't know how to fish.
我不会钓鱼.
It is very useful for a person to know how to swim.
对一个人来说会游泳是很有用的.
We must know how to judge people.
我们必须善于识别人.