translate • Matter can be changed into energy, and energy into matter. • Air pressure decreases with altitude. • Avoid using the computer in extreme cold, heat, dust or humidity. • According to scientists, it takes nature 500 years to create an inch of topsoil. • Emperors unexceptionally regarded the common people as weed. • Courage in excess becomes foolhardiness, affection weakness, thrift avarice. • He becomes extremely excited whenever he talks about his hometown – mountains, waters, flowers, plants, fishes and birds. •