British astronaut Tim Peake said it could take a while to re-adjust.
The latest earbuds are said to offer improved audio quality and active noise cancellation (ANC), with an ambient sound mode, adaptive EQ and adaptive ANC. On Buds 4 Pro, there's a siren detection feature that enables ambient sound to let you hear things like alarms or emergency vehicle warnings.，详情可参考91视频
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Actuators are the motors which drive all sorts of machinery
Sketched out concepts, using Excalidraw[2]