If you button a shirt, coat, or other piece of clothing, you fasten it by pushing its buttons through the buttonholes. 扣上
adjective [原级] 扣紧的；用钮扣装饰的
I zipped and buttoned my jacket. 我把夹克的拉链拉上，系好扣子。
verb [vt. 及物动词] 扣……的纽扣；扣住，用纽扣扣上（button 的过去式和过去分词）
No conclusion should be drawn before all the facts are buttoned down. 所有事实弄清以前,不应该下任何结论.
