be - limited後面跟什麼介詞

後面跟介詞to，例如：

1、The teaching of history should not be limited to dates and figures.教授歷史不應該侷限於講年代和人物。

2、The expenses should be limited to what you can really afford.費用不應超出你們償還能力的限度。

3、Network volumes need not be limited to user data， however.但是，可能需要使用網絡卷的不僅僅是用户數據。