Know-how is the practical skill of how to do something — not just facts in a book, but the hands-on knowledge that lets you actually get the job done. A baker’s know-how is in the dough. A company’s know-how might be a way of making a machine that other companies cannot easily copy.

Know-how is the practical skill of how to do something是實際去做一件事的本事 — not just facts in a book不只是書上的知識，but the hands-on knowledge that lets you actually get the job done而是真的能讓你把事情做出來的實作知識。A baker's know-how is in the dough麵包師傅的know-how就在麵團裡。A company's know-how might be a way of making a machine that other companies cannot easily copy一間公司的know-how可能是一種做機器的方法，是別家公司不容易複製的。

The word came from American English in 1838, from the ordinary phrase know how.

The word came from American English in 1838這個字1838年出現在美式英語裡，from the ordinary phrase know how源自平常的片語「know how」（知道怎麼做）。

People use it in business, in engineering, and in everyday talk. It is uncountable: you have know-how; you do not usually say a know-how.

People use it in business, in engineering, and in everyday talk商業、工程和日常對話裡都會用到它。It is uncountable這是不可數名詞：you have know-how你可以說有know-how，you do not usually say a know-how但通常不會說a know-how。

Though actually, it is a little more ‘can do’ than knowledge: you can know a lot and still lack the know-how.

Though actually, it is a little more 'can do' than knowledge不過其實它比「知識」多了一點「做得到」的意味：you can know a lot and still lack the know-how你可以懂很多，卻還是缺乏那種know-how。