?局限于

... be charged with 承担，负责，被控告 be confined to 局限于 be essential to 对…而言必不可少 ...

?限制在

... be committed to 被交给┄,答应/承担...义务; be confined to 限制在,局限于; be dedicated to 奉献,献给; ...

?限于

... battle for 拼搏 be confined to 限于 by itself 独自的 ...

?限制于

... barrier 5bArIE n. 界线,屏障,障碍物; v. 以屏障隔开 be confined to 限制于，局限于 be credited with 把...归功于；认为...(有某种成就) ...