limit/ 'lɪmɪt /

1.vt.[+production] [ expense etc] 
限制

2.noun [c] 
(maximum point) 限度

3.noun [of area] [ city] 
界线

4.noun
(restriction) (on time,money etc) 限定

to limit o.s. to sth
自我限定某物
to be off limits (to sb)
禁止(某人)入内
to be over the limit
 [BRIT] 饮酒过量
within limits
适度地