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約束を破る， 約束をやぶる， やくそくをやぶる
1. to break a promise, to go back on one's word, to renege
违背承诺；食言；违约
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ならない
1. cannot help (feeling), unbearably, awfully, irresistibly
2. must not ..., should not ...
3. must ..., have to ..., ought to ...
4. cannot, unable to
5. not
tbd
は
1. indicates sentence topic
2. indicates contrast with another option (stated or unstated)
3. adds emphasis
指示句子的主题；表示与另一选项（无论是否明确提及）形成对比；表示强调
