每日一句经典语录/谚语：：It is easy to learn something about everything, but difficult to learn everything about anything.对一些事情知道是容易的, 对任何一件事都了解详细却是困难的。
访问密码：183023
每日一句经典语录/谚语：：It is easy to learn something about everything, but difficult to learn everything about anything.对一些事情知道是容易的, 对任何一件事都了解详细却是困难的。
访问密码：183023