Certain pigment colours were painted on to dry plaster using tempera (where egg yolk is used to fix the pigment).使用蛋彩画颜料（内含可以定色的蛋黄）在干石膏上绘出了特定颜色。So studying Tempera is significant to develop the modern painting material.研...
The farmers put up the apples in barrels.农夫们把苹果装入箱内。OPEC production is holding at around 21.5 million barrels a day.石油输出国组织的石油产量保持在每天约2,150万桶。In 1989, Kuwait was exporting 1.5 million barrels of oil a day...1989年，科威特每天出口...
It taught only materialism, the gospel of mammon.它只是宣扬金钱至上的物欲主义。Idealism is opposite to materialism.唯心论和唯物论是对立的.Crass materialism causes people to forget spiritual values.极端唯物主义使人忘掉精神价值....