实现软件天线的关键技术之一就是环境的分类与识别。
One of the key technologies to realize software antenna is the classification and identification of the radio environments.
面对日益增长的垃圾产量和环境状况的恶化，中国政府正在努力推行垃极分类的政策。
Confronted with the growing garbage output and deteriorating environment, the Chinese government is implementing the policy of garbage classification with great effort.
为了正确地分类垃圾和保护环境，不同国家的人们正在使用不同的方法来分类他们的垃圾。
In order to sort the rubbish properly and protect the environment, people in different countries are using different methods to sort their waste.
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