1. It is only someone looking on from outside that can inject the dangerous thoughts.
    唯有从外界旁观者才能灌输危险思想。

2. I do not doubt that it would be possible to inject ideas into the modern world that would utterly destroy us.
    向现代世界灌输能彻底摧毁我们的意识形态是可能的，对此我并不怀疑。

3. It is only someone looking on from outside that can inject the dangerous thoughts.
    只有外部的旁观者才能灌输危险的思想。

4. I do not doubt that it would be possible to inject ideas into the modern world that would utterly destroy us.
    向现代世界灌输一种思想以便摧毁我们人类是可能的事，对此我并不怀疑。