Spoken tone change to: bú duì. “bú duì” shows how the tone of “不” (normally fourth tone – bù) changes to a second tone (bú) when followed by a fourth-tone word like “对”.
(adv) not; no; won’t; not want to; cannot
(adv) used in a sentence to indicate that it is a question
(adj) right; correct
(prep) with regard to; concerning; to
(adj) opposite; opposing
(adv) mutual; face to face
(verb) answer; reply;
(measure word) pair
(verb) to face, to direct
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