可持续林业不是一种选择;它是一种义务。
Sustainable forestry is not an option; it's an obligation.
你有敌人?很好。这说明在你的生命中的某个时刻,你曾经呐喊过。
The world is not a wish-granting factory.
The concept of legal obligation is central to the understanding of law.
我的艺术就是我的灵魂。