According to the newly revised Clean Air Act, emission permits have finally been granted legal status and will play an instrumental role in assigning reduction responsibilities and in enforcement.
根据最新修订的《空气清洁条例》，排放许可可最终赋予了法律地位，并在指定和执行减排义务中起指导性作用。
Then according to the accompaniment, we divide choir into a Cappella and choir With Instrumental accompaniment.
以伴奏形式为依据分为有伴奏合唱和无伴奏合唱。
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