Allard also notes that "Both the Buds4 and Buds4 Pro will feature smaller earbud heads, with the intention of providing more comfortable all-day wear." On top of that, the Pro models also feature Adaptive Active Noise Cancellation 2.0 for keeping outside noises quiet and a battery life that lasts up to 26 hours using ANC (with the charging case's help), or up to 30 hours without ANC.
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She was so good in fact that she was soon promoted to commander, in another first.
p = p.next; // 指针后移，易错点2：忘记移动指针会导致死循环