So, I do not think Coca Cola will totally replace Diet Coke.

因此，我不认为可口可乐将完全取代健怡可乐。

youdao

One complimentary Coffee or Tea or Soft Drink :(Sprite, Coke Cola, Diet Coke) ; Coffee Or Tea (Refill+7Rmb/cup)

赠送一杯咖啡或茶或软饮：（雪碧，可口可乐，健怡可乐）； 咖啡或茶（ 续杯+7人民币/杯）

youdao

Pepsi Next and Dr Pepper 10 each have less than a 1% market share and Coke's last big diet cola launch, Coke Zero, was in 2005.

WSJ: Fizzy Drinks Revenue Goes From Flat to Sour

Sparkling beverages, including Coca-Cola and Diet Coke, continue to see strong growth, the company said.

FORBES: Coca-Cola Beats Revenue Estimates, Matches EPS

Coca-Cola and Diet Coke supply 29% of that market, or about 3 billion gallons a year, ( see chart).

FORBES: Gone Flat