1、Whoever had thoroughly grasped it would be safe from human influences.
誰完全掌握了它，誰就可以免受人類影響的威脅。

2、The willows have grown tall enough to be safe from trampling.
這些柳樹都長高了，不怕被人踩踏了。

3、Floating cities will be safe from flooding.
漂浮的城市不會被洪水淹沒。

be safe from翻譯