有了实际工作,宝宝的自我意识就会逐渐发展、强化。
The complexity of viruses reminds us how much we still have to learn about biology.
The future of agriculture lies in sustainable practices that benefit both the farmer and the environment.
小王子穿过沙漠。他只见过一朵花,一个有着三枚花瓣的花朵,一朵很不起眼的小花……