Cash cow: a profitable legacy product that often leads to complacency about new products.

摇钱树(cash cow)：盈利的老产品通常会导致对新产品的自满。

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

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。

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

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。

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