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历史:
CET-4 CET-6 TOEFL BNC: 6399 COCA: 14865
unsatisfactory
un·sat·is·fac·to·ry / Qn7sAtIs5fAktErI ; Qn7sAtEs5fAktEri /adjective
1. not good enough or not acceptable不够好的,不令人满意的:
an unsatisfactory situation让人不满意的状况

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