以下是关于In App Purchase的很好的解释

In-app purchase (IAP) means buying more content for the app through@H_301_5@ Marketplace while in the app. Another name often used for them is@H_301_5@ micro-transactions for the smaller purchases. Buying a new costume@H_301_5@ for your character. You need several thousand gold coins to get that@H_301_5@ pet cat in the game you are playing. You could play the game and@H_301_5@ grind away killing monsters over several hours and earn the XP to get@H_301_5@ the cat,or you could pay $2 now via in-app purchase and have the cat@H_301_5@ straight away.

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