__________ environmental damage is done, it takes many years for the ecosystem(生态系统) to recover.
It’s a long story and there is not much time left, so I’ll tell you about it .
As the war in Libya goes on, an increasing number of people in the country from their homes and a safe place to stay.
Sunglasses are sometimes worn to the eyes strong sunlight.
On April 24, Tsinghua University its 100th anniversary at the Great Hall of the People in Beijing.
After sailing for five months, they arrived at they thought was the place they had been looking for.