有些粮食作物歉收。但棉花的收成仍相当不错。Some of the food crops failed. However, the cotton did quite well.他们一直用小麦交换棉花和木材。They have been bartering wheat for cotton and timber.棉花价格始终保持坚挺，需求旺盛。Cotton prices remain firm and demand is strong....
Autophagy stabilizes intracellular environment and maintains cell survival through balancing anabolic metabolism and catabolism.通过平衡细胞合成和分解代谢,自噬稳定细胞内环境,维持细胞的存活.Autophagy is a vacuolar process of cytoplasmic degradation b...
总之, 感应电动势滞后于电流.In a word, the induced e . m . f . lags behind the current.任何这样的装置称为电动势源.Any such device is called a seat of electromotive force.这个电池两极的电动势是3.6伏特.The electromotive force between the two poles of this batte...
A forest fire is sweeping across portions of north Maine this evening.今晚一场森林大火正席卷缅因州北部的部分地区。The portions were generous.每份饭菜分量都很足。Three portions of fish and chips, please.请来三份炸鱼薯条。...