The biggest target is NATO's commitment to mutual self-defence.
北约的共同防卫承诺是他最大的心头之患。
It was a quantitative target for describing of self-purification capacity of water environment of area.
它是描述一个地区水环境自净能力大小的定量指标。
It was a quantitative target for describing of self-purification capacity of water environment of area.
它是描述一个地区水环境自净能力大小的定量指标。
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