There are many more, but these six are often quoted, especially in business circles.

技巧还有更多，尤其是在商业领域，这里只列举了6个。

youdao

There are many more, but these six are often quoted, especially in business circles.

技巧还有更多，尤其是在商业领域，这里只列举了6个。

youdao