He pulled the lightened sled with all his strength.他用尽全力拉减轻了重量的雪橇。As they approached the outskirts of the city, Ella's mood visibly lightened...他们快到市郊时，埃拉的情绪明显好转。As they approached the outskirts of the city, Ella�...
As agriculture developed, agricultural ideas diffused across Europe.随着农业的发展，农业知识开始在欧洲普及。A drop of milk diffused in the water.一滴牛奶在水中扩散开来.Gases and liquids diffused.气体和液体慢慢混合了....
地球是水与陆地合成的球体.The earth is a terraqueous globe.蜂胶是蜜蜂用植物汁液合成的像树脂一样的物质。Propolis is a hard resinous sub-stance made by bees from the juices of plants.维生素是一种人体无法合成的化合物。A vitamin is a chemical compound that cannot be synthesiz...