在保护我们的海洋生态系统方面,每一个小小的行动都很重要。
书籍是通往宇宙的钥匙。
"Parental investment is the key to understanding the origins of sex differences."
In the end, we will remember not the words of our enemies, but the silence of our friends.
记录程序的最好方法是记录它。