南方周末：储能成本怎么降？基建投资能帮它“打通堵点”？
bs, num_anchor = anchor.shape[:2]
，详情可参考易歪歪官网
I think there's actually something going on to explain this:
The first one on the menu is Sonos Play, a portable speaker that sits in between Sonos' ultra-portable Roam 2, and the hefty Move 2. Having reviewed the Move 2, I can tell you that something like Play was sorely needed; as great as it sounds, the Move 2 isn't all that portable.
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