2. Environmental damage threatens the whole of civilization. 环境的破坏威胁着整个文明世界。
3. This is a trend which threatens the very fabric of society. 这是威胁社会基本结构的趋势。
4. Smoking is not only harmful to smokers themselves, but also threatens other people's health. 吸烟不仅对吸烟者有害,也会威胁其他人的健康。
5. On a more global level, the destruction of the rainforest for full-sun coffee fields also threatens human life. 在更全球化的层面上,为种植全日照的咖啡田而破坏雨林也威胁到了人类的生存。