儿童的一切教育都必须遵循一个原则,即帮助孩子身心自然的发展。
The wild is a place of danger. To survive, you have to respect it.
我不是英雄,我不是反派,我只是黑暗中的一个声音。
He who wants to do good knocks at the gate;he who loves finds the gate open.
煤炭的未来取决于我们能否使其更清洁、更高效。