虽然并不完美，但是这种代表汇率至少与现实着边。
Still, while it is not perfect, the proxy rate is at least in touch with reality.
有些模仿虽然并不完美，但幸运的是蝴蝶的视力似乎也不太好。
Such mimics are imperfect, but fortunately so is butterfly vision.
长久以来，测试版Apps虽然并不完美，但比大多数软件都更加稳定。
For a long time now, the beta version of Apps has been far more stable than most software marked as such, though it's not been without hiccups.
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