—— 请按键盘 空白键 开始游戏 ——

风俗习惯是人类生活的重要指南。
Sustainability requires bold vision and relentless execution.
You are too generous to trifle with me. If your feelings are still what they were last April, tell me so at once. My affections and wishes are unchanged, but one word from you will silence me on this subject for ever.
Sustainable forestry is not an option; it's an obligation.
人们对自己的遗传学了解得越多,就越能掌控自己的健康。
在数学中,你不理解事物。你只是习惯了它们。
你知道的越多,就越明白自己知道的很少。