"The future of energy lies in balancing sustainability with profitability."
幸福的秘密是自由，自由的秘密是勇氣。
解釋：高明的醫(yī)生注重預防疾病，而不是等到疾病發(fā)生后再去治療。
語出西漢·桓寬《鹽鐵論·申韓》。國家不愁沒有法制，而是怕沒有切實可行的法制。說明制定法律應能夠施行。
I always tell my students that it's okay to make mistakes, as long as you learn from them.