Months after launching its own movie streaming service against behemoth Netflix, the big box store has released music cloud that competes with, seemingly, everyone who has a cloud-based music service.
在推出自己的电影流媒体服务对抗Netflix数月之后，其又推出了自己的音乐云服务与其他公司竞争。
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We're comparing one implementation against another, where they both do the same thing. Black box equivalent.