长椅周围的人群渐渐散去了。The crowd around the bench began to melt away.我们三三两两从农舍散去。We fanned out from the farmhouse in twos and threes.半夜时分，人群渐渐散去了。By midnight the crowd had thinned....
仅仅50毫克的咖啡因就能产生药理效果。As little as 50mg of caffeine can produce pharmacological effects.凭经验估计，一杯过滤咖啡约含80毫克咖啡因。As a rule of thumb, a cup of filter coffee contains about 80mg of caffeine.每次服用大约60毫克，每天最多4次，或遵医嘱。Take approximat...
The decay of the meat could have been prevented by proper refrigeration.如果经过适当的冷藏,这些肉本来不至于腐烂掉.Keep all meat products under refrigeration.把所有的肉制品都冷藏起来。This result is of great importance in steam engineering and in refrige...