For cleanness of waters in our country, it is essential to treat domestic sewage with purification tank under dispersed state, besides sewage treatment plant under centralized state.

为了确保我国水体清洁，生活污水除了集中处理之外，分散式的净化槽系统也是不可缺少的。

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The majority of strikers occupying the plant were detained while others were dispersed, a police statement said, adding that most of those in detention would be released later.

BBC: South Korea police break up Yoosung Hyundai strike