With the market for low-calorie sweeteners nearing $1 billion a year in the US alone, thaumatin is likely to become a cash cow .是什么意思_With the market for low-calorie sweeteners nearing $1 billion a year in the US alone, thaumatin is likely to become a cash cow .在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句