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.
单调栈模板有共性，不必死记，按下面三步即可快速选型：
。Line官方版本下载是该领域的重要参考
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