Innovation in oil extraction must go hand in hand with environmental stewardship.
文化核心的概念对于理解社会如何组织其生存活动至关重要。
气候变化和过度捕捞是我们必须共同应对的双重威胁。
The greatest cruelty is our casual blindness to the despair of others.
The only limit to our realization of tomorrow will be our doubts of today.