如果您可選擇同類的乳酸菌飲品 (如美樂多),您還會買益力多嗎? If there is a substitute which also contains Lactobacillus casei Shirota strain (the healthy bacteria that Yakult contains), will you still buy Yakult?
如果有一種新的益力多推出,它的味道與益力多相近,但售價是益力多的三份之一,你仍會購買益力多嗎? If a new soft drink is launched in which its taste is similar to Yakult and the price is one-third of Yakult, will you still buy Yakult?