英倫海峽海底隧道方便了法國人湧進英國。對此,許多英國人擔心這會威脅到他們文化的純粹性英文怎麼說？

The Channel Tunnel enables the Gauls to swarm into England, which, many Englishmen think, may threaten the purity of their culture.

如果我們浪費礦物燃料,我們就威脅文明英文怎麼說？

If we squander our fossil fuels, we threaten civilization.

我沒有威脅的意思英文怎麼說？

I don't mean to threaten.