On the condition of thermal contact metamorphism, clay minerals in coal are changed into andalusite.无烟煤中红柱石是煤中粘土质矿物经热接触变质作用形成的.A paper bird cannot stand the strong wind, and a clay figurine cannot bear the heavy rain.纸鸟经...
Predatory pricing by large supermarkets was threatening the livelihood of smaller businesses.大型超市的掠夺性价格正威胁着小商店的生计。The company say they're able to keep pricing competitive.该公司说他们能够使定价保持竞争力。It's hard to maintain ...