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(1) 閂住;扎(釘)牢;拴;捆(make fast or secure) [T+n，T+n+prep (on/to)，T+n+adv (down/together)]：～one's seat belt/the door 系上安全帶/閂上門;～a horse to a tree 將馬拴在樹上;～a lock on the gate 用鎖將大門鎖牢;～a badge/a brooch on one's coat 將徽章/胸針別(在衣服)上;～down the lid of the biscuit tin 將餅干盒的蓋子蓋上;～the papers together/with a safety pin 將文件釘在一起/用安全別針將文件系在一起;〖同〗attach，secure，bind，stick，connect，lock，link;〖反〗 unfasten，loosen，loose，untie，divide;

(2) 扣(系)上(join or tie firmly) [T+n，T+n+adv(up)]：～(up)one's shoes/one's coat 系鞋帶/扣上衣服的扣子;～up the button at the back 從后面扣上扣子;〖同〗 close，join，tie;〖反〗unfasten，untie;

(3) 盯住，集中在(fix or focus steadily one's attention on) [T+n+prep (on/upon)]：～one's eyes/one's attention(up)on sb/sth 將目光/注意力集中在某人/某物上;～one's attention on her remarks 注意聽她的話;〖同〗 fix，direct，focus，hold;

(4) 扣(閂)住，附著(become fast，fixed or firm) [I，I+adv]：The door will not ～properly. 門關(guān)不好。The window～s with a hook. 窗戶用窗鉤鉤著。

fasten down (v adv) 使……作出決定(vt)：～sb down on a firm date 讓某人訂出確定日期;

fasten on/upon (v prep) 1) 將(過錯等)推在某人頭上 (vt)：～a crime/the blame on sb 加罪于/責難某人;2) 抓住，利用 (vt)：He～ed on the idea immediately. 他馬上抓住了那個主意。

→′fastener n 鈕扣;′fastening n 扣緊，扣件