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err(msg) = println(f"failed: {msg}"),
，详情可参考新收录的资料
Capabilities are registered as arrays of name-function pairs, terminated by a {NULL, NULL} sentinel:
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Жених конькобежки подарил ей роскошную машину в честь победы на Олимпиаде
· 黄磊 · 来源：tutorial头条