蓋亞假說是為那些喜歡散步或只是站著凝視的人準(zhǔn)備的,他們思考地球及其承載的生命,并推測人類活動的后果。
乳制品不僅僅是一種產(chǎn)品;它是人們生活的一部分。
"The best time to plant a tree was 20 years ago. The second best time is now."
It is remarkable that a science which began with the consideration of games of chance should have become the most important object of human knowledge.