milestone, please help


How do you translate "milestone billing" in Chinese in a better way?

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就分段式收费吧。 -sigma- 给 sigma 发送悄悄话 (0 bytes) () 12/20/2013 postreply 16:14:16

按期收费? -halfdummy- 给 halfdummy 发送悄悄话 (0 bytes) () 12/20/2013 postreply 21:14:07

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