父母养育我们不易,我们不应该让他们失望.
It's not easy for parents to raise us,and we shouldn't .
Tan Dun's music Water, which is full of the sounds of nature, is listening to.(值得)
The temperature in our hometown usually drops zero in winter. (在……以下)
Follow these small , and you can make a big difference to the Earth.(步骤)
Knowledge is a treasure, but practice is the to it. (钥匙)
当我们处于困境时,我们不应该放弃.
We shouldn't when we are in trouble.