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- nitrogen phosphoras pollution 氮磷污染
- Air consists chiefly of nitrogen. 空气主要由氮气组成。
- The key pollution indicators are ammonia nitrogen and BOD. 主要污染指标是氨氮和生化需氧量。
- We should use anthracite to avoid air pollution. 我们应该使用无烟煤以防止空气污染。
- Nitrogen forms most of the Earth's air. 地球上空气的大部分成分是氮气。
- Pollution control has cleared the air. 污染管制已净化了空气。
- The lamp is full of gaseous nitrogen. 灯里充满了气体氮。
- Man is fighting a battle against pollution. 人类正在与污染作斗争。
- Nitrogen forms about 78% of the earth's atmosphere. 氮约占地球大气的百分之七十八。
- Pollution is still very much a live issue. 污染现象仍然是当前的大问题。
- The soil becomes more and more acidic as pollution mounts up. 随着污染的加剧，土壤的酸化越来越严重。
- A clamor in the press for pollution control. 在报纸上对污染控制的呼吁
- Water pollution imperils all kinds of marine life. 水质污染危及所有海洋生物。
- Pollution has stripped the trees of their foliage. 污染剥光了这些树的叶子。
- We have freed the lake from pollution. 我们已经清除了该湖的污染。
- Many young people could not resist the spiritual pollution. 很多年轻人不能抵制精神污染。
- Will you sunder nitrogen from air? 你能从空气中把氮气分离出来吗?
- It will cause pollution and the destruction of our seas and oceans. 这会引起污染，破坏我们的海洋和江河。
- We are sad about the pollution of our beaches with oil. 我们很痛心石油对我们海滩的污染。
- Nitrogen is the most commonly used gas. 氮气是最常用的气体。
