任昀 2021-03-14 18:31 对子歌平对仄,仄对平。平仄两分明。有无与虚实,死活并重轻。上去入声皆仄韵,东西南字是平声。虚对实,实对虚。轻重莫偏枯。留心勤事业,满腹富诗书。古人已用三更足,年少今开万
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