1. limit, restrict, confine, define, narrow, tighten, constrict, cap,

narrow(v.): 以前使用的时候一般都是作为形容词来用，这里强调下它的动词的用法。

E.g. We are working on narrowing the gap between our points of view.

E.g. We’re working to narrow down the list of possible suspects.

E.g. The smoking causes the same diseases in women as in men and the gap between

their death rates is narrowing.

define (v.):意思是给……下定义, 这个意思和限制并不矛盾，

define 的英文解释：If you define something, you show, describe, or state clearly what it is

and what its limits are, or what it is like）

E.g. The Supreme Court decision could define how far Congress can go in trying to

determine the outcome of court cases.

cap (n./v.):最常用的意思是帽子。

E.g. The government has placed a cap on local council spending.

snow-capped mountains

2. focus on, concentrate on, aim,spotlight,be engrossed in, lay/place/put emphasis on, deal only with, highlight,

spotlight(v./n.): 本意是聚光灯的意思

E.g. A new report has turned the spotlight on the problem of poverty in the inner cities.

E.g. The report has turned the spotlight on the startling rise in street crime.

E.g. Unemployment is once again in the spotlight.

E.g. The article spotlights the problems of the homeless.

engross (v.): 全神贯注于某事

E.g. The scene was stunning, and for a time engrossed all our attention.

E.g. He was so engrossed in his book that he didn’t hear her come in.

highlight(v./n.): 本意为用高亮度标记

E.g. The incident has served to highlight the problems of urban deprivation.|

highlight 作名词 表示一系列事情的亮点，最精彩所在，

E.g. That weekend in Venice was definitely the highlight of our trip.

E.g. The highlight of the trip was visiting the Great Wall of China.