- loosen
 - ['lu:sən]
 - vt. 放松;松开
vi. 放松;松开 
反义词
           - v. stiffen
 
参考例子
           - 1.Loosen clothing around the neck to facilitate breathing.
 - 解开围在脖子上的衣服以促进呼吸。
 
- 2.Loosen the valve union nuts and slide them back over the end connections.
 - 松开阀门的管接头螺母,并将其滑回到端口连接件上。
 
- 3.To clean or replace parts; shut off supply, loosen lock-nut and back off adjusting screw.
 - 如果要清洗或更换部件,关闭供应管道,松开锁紧螺母,退出调节螺丝。
 
英文解释
           - v.
 - 1.make loose or looser
 - 2.make less severe or strict
 - 3.become less severe or strict
 - 4.disentangle and raise the fibers of
 - 5.cause to become loose
 - 6.make less dense
 - 7.become loose or looser or less tight
 
网络释义
               - loosen
 - 放松; 松开; 解开; 松开、松动;
 
- loosen loose
 - 解开就会松掉;
 
- loosen texture
 - 松散结构;
 
- loosen -
 - 解开,放松;
 
- loosen off
 - 拆下;