凤眼莲的生态习性与病虫害防治
Today， a large number of idioms are widely used in the daily life in western countries. It is very necessary for us to learn these idioms. As idioms are the parts of culture， the ability to understand them is very important to successful munication in cross-cultural munication. To know the cultural differences the idioms reflect can help us understand and grasp the essence of idioms more effectively. So in order to municate with foreigners more fluently， the study of the relationship between the idiom and culture is significant and promising.
京沪等地利用引进技术生产的营养液，许多花市均有出售。购买了无土水培的花卉后，其管理方法如下：