从亚当和夏娃时代到农业发明之前,人类的生存一定是岌岌可危的,因为他无法确保自己的食物供应。
If we want clean air and water, we must start by protecting our forests.
【释义】选拔任用人才,确实是国家的当务之急。
The beauty of mathematics only shows itself to more patient followers.
世界充满了美,但也充满了痛苦和苦难。
The Great Moderation was neither great nor a moderation.