Something that is restricted is quite small or limited.
双语例句
例：
the monotony of a heavily restricted diet.
受到严格限制的饮食的单调乏味。
2.?仅限的
If something is restricted to a particular group, only members of that group have it. If it is restricted to a particular place, it exists only in that place.
双语例句
例：
Discipline problems are by no means restricted to children in families dependent on benefits.
纪律问题绝不仅是来自靠救济金生活的家庭的孩子才有的问题。
3.?不对外开放的
A restricted area is one that only people with special permission can enter.
双语例句
例：
a highly restricted area close to the old naval airfield.