Invention is the mother of necessity.
答案,我的朋友,在风中飘荡。
The duty of a true patriot is to protect his country from its government.
「释义」:坚守志向要像心痛发作,全神贯注在痛处,哪还有心思闲聊多事?
现代林业必须平衡三个轴心:生态、经济和道德。