free的副词不受限制的

　　They freely admit they still have a lot to learn.

　　他们坦率承认，他们要学的东西还很多。

　　It was obvious that money flowed freely in their family.

　　显然他们家族有的是钱。

　　This can prevent air from flowing freely to the lungs.

　　这可以防止空气任意流入肺部。

　　EU citizens can now travel freely between member states.

　　欧盟国家的公民现在可以在成员国之间自由旅行。

　　The book is now freely available in the shops.

　　现在这本书在商店可以随时买到。