求助美亚上买东西看不懂 one-time purchase是什么意思，如果选

one-time purchase

一次性购买

While most gaming in the u.s. remains based on either a one-time purchase or ads, tencent has done well by selling virtual products to its users.

美国，大多数游戏的收入都是依靠玩家一次性购买或者广告，但腾讯已经向用户开始销售虚拟产品了。