Sometimes we will search education resource in the network, yet it is difficult to satisfy this requirement properly by using general searching-engine.
在网络中搜索各种教育资源时，通用的搜索引擎很难满足特定的需求。
Sometimes we will search education resource in the network, yet it is difficult to satisfy this requirement properly by using general searching-engine.
在网络中搜索各种教育资源时，通用的搜索引擎很难满足特定的需求。
应用推荐