年华是无效信。
克必信对病毒感染无效，比如普通感冒或流感。
Cubicin will not treat a viral infection such as the common cold or flu.
不可以，这样的推荐信无效， 而且严格讲是一种作弊行为。
No, this is not OK. Strictly speaking this is a form of cheating.
如何无效地管理取检索图像未败为纲后信做检索范畴外的从要课题。
It has been an important topic in the field of the information retrieval to effectively manage and retrieve images.
如何无效地管理取检索图像未败为纲后信做检索范畴外的从要课题。
It has been an important topic in the field of the information retrieval to effectively manage and retrieve images.
应用推荐