(1) 闩住;扎(钉)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 系上安全带/闩上门;～a horse to a tree 将马拴在树上;～a lock on the gate 用锁将大门锁牢;～a badge/a brooch on one's coat 将徽章/胸针别(在衣服)上;～down the lid of the biscuit tin 将饼干盒的盖子盖上;～the papers together/with a safety pin 将文件钉在一起/用安全别针将文件系在一起;〖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 系鞋带/扣上衣服的扣子;～up the button at the back 从后面扣上扣子;〖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 将目光/注意力集中在某人/某物上;～one's attention on her remarks 注意听她的话;〖同〗 fix，direct，focus，hold;

(4) 扣(闩)住，附着(become fast，fixed or firm) [I，I+adv]：The door will not ～properly. 门关不好。The window～s with a hook. 窗户用窗钩钩着。

fasten down (v adv) 使……作出决定(vt)：～sb down on a firm date 让某人订出确定日期;

fasten on/upon (v prep) 1) 将(过错等)推在某人头上 (vt)：～a crime/the blame on sb 加罪于/责难某人;2) 抓住，利用 (vt)：He～ed on the idea immediately. 他马上抓住了那个主意。

→′fastener n 钮扣;′fastening n 扣紧，扣件