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.

我沒有威脅的意思英文怎麼說？

I don't mean to threaten.

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.