His priceless collection of Chinese art and artefacts was garnered over three decades.他那批价值连城的中国艺术品和手工艺品是花了30多年才收集起来的。The artefacts have gone to Lima for safe keeping.文物被送到利马妥善保管.Ghosts and blurred area artefacts appear ...

Cataracts is a condition that affects the transparency of the lenses.白内障是一种影响晶状体透明性的疾病。In one study, light smokers were found to be more than twice as likely to get cataracts as non-smokers.研究表明，即使抽烟不多的人也比不抽烟的人患白内障的概率高出一...

Calcium reacts with water.钙和水会发生化学反应。A dog reacts to kindness by wagging its tail.狗摇尾巴以报答人们的爱护.The eye reacts to the light.眼睛会对光作出反应....

When a large object impacts the Earth, it makes a crater.当巨大物体撞击地球时，就会产生凹坑。The helmets are designed to withstand impacts equivalent to a fall from a bicycle.头盔设计的承受力相当于从自行车上摔下的冲击力。There is also a new steering wheel with ...