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difficult (adj)/ˈdɪf.ə.kəlt//ˈdɪf.ɪ.kəlt/not easy or simple; hard to do or to understandkhó khăn  It’s a difficult choice, but I’ve got to decide which job is better. Learning a new language can be difficult, requiring time and consistent practice. Solving complex mathematical problems can be difficult without a strong foundation in the subject. Climbing the steep mountain proved to be a difficult challenge for the experienced hikers. The instructions were so difficult to follow that many participants struggled to complete the task. Từ vựng khác:travel voucher , upgrade , abusive language , lose one's temper , disturbance |