The extreme difficulty in tracing the manufacturing and distribution channels of counterfeit medicines makes their circulation on markets difficult to stop.
由于在追查制造假冒药品及其分销渠道上困难重重，因而难以阻止假冒药品在市场上的流通。
The extreme difficulty in tracing the manufacturing and distribution channels of SFFC medicines makes their circulation on markets difficult to stop.
由于在追查制造假冒药品及其分销渠道上困难重重，因而难以阻止假冒药品在市场上的流通。
I had ever seen mother cried in such way, even in extreme difficult days, mother still retained the image of fortitude.
我从没见母亲这样哭过，即使是在异常艰难的日子里，母亲的形象也是坚毅的。
The magnitudes of items and users in the system results in the extreme sparsity of user rating data, which makes it difficult to find neighbors effectively.
随着系统中资源数目和用户数目的不断增加，在整个资源空间上用户评分数据极端稀疏，给有效的查找最近邻居带来了很大的困难。
The magnitudes of items and users in the system results in the extreme sparsity of user rating data, which makes it difficult to find neighbors effectively.
随着系统中资源数目和用户数目的不断增加，在整个资源空间上用户评分数据极端稀疏，给有效的查找最近邻居带来了很大的困难。
应用推荐