be free from这个词组的意思是“免于…"。

如，We'd be free from our dependency on foreign oil .我们会免于依赖国外石油。How we wished to be free from noises! 我们多么希望不受噪音的影响！The girl asked her father to free the bird from the cage. 那女孩请求她父亲把鸟从笼子里放出去。