华尔街上的大铜牛应该跟这个成语有一定的联系吧，寄望于股票像摇钱树一样财源滚滚。

A product or service which is a regular source of income for a company is called a cash cow.

youdao

华尔街上的大铜牛应该跟这个成语有一定的联系吧，寄望于股票像摇钱树一样财源滚滚。

A product or service which is a regular source of income for a company is called a cash cow.

youdao