To streamline an organization or process means to make it more efficient by removing unnecessary parts of it.
例句
They're making efforts to streamline their normally cumbersome bureaucracy...他們正努力精簡本來繁冗復雜的官僚體制。They say things should be better now that they have streamlined application procedures.他們稱鑒于他們已經簡化了申請手續，情況應該會有所好轉。