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- As a result, the dredge was suggested to be ues to serious polluted river so that the most serious polluted layer could be apart from upper water of river. 由此認為，對于底泥污染嚴重的河流，疏浚是必不可少的，其目的在于清除或隔絕黑色富集層對上覆河水的二次污染。
- On-site Measurement of Pollution Layer Conductivity for Suspension Insulators 絕緣子污穢度現場(chǎng)測試技術(shù)研究
- The research indicates that the modern sediment is divided three layers: polluted layer,transition zone and unpolluted layer.Just the pollute layer cause Dianchi Lake environmental pollution. 研究結果表明：滇池現代沉積物主要分為三層，污染層、過(guò)渡層和未污染的湖泊沉積層，其中污染層是對滇池環(huán)境污染造成影響的層位；
- We should use anthracite to avoid air pollution. 我們應該使用無(wú)煙煤以防止空氣污染。
- The pollution had destroyed ozone layer and caused many changes in weather. 污染破壞了臭氧層，并引起了許多天氣變化。
- Pollution control has cleared the air. 污染管制已凈化了空氣。
- This layer of rock contains a lot of flint. 這一巖層中有大量燧石。
- Man is fighting a battle against pollution. 人類(lèi)正在與污染作斗爭。
- Pollution is still very much a live issue. 污染現象仍然是當前的大問(wèn)題。
- The inner layer of the wall of a spore. 孢子內壁孢子壁的內層
- There is a fine layer of dust on the desk. 桌子上有一層薄薄的塵土。
- The soil becomes more and more acidic as pollution mounts up. 隨著(zhù)污染的加劇，土壤的酸化越來(lái)越嚴重。
- A clamor in the press for pollution control. 在報紙上對污染控制的呼吁
- Water pollution imperils all kinds of marine life. 水質(zhì)污染危及所有海洋生物。
- Pollution has stripped the trees of their foliage. 污染剝光了這些樹(shù)的葉子。
- The middle, usually fleshy layer of a fruit wall. 中果皮果皮中間通常含肉較多的那一層
- We have freed the lake from pollution. 我們已經(jīng)清除了該湖的污染。
- The bottom layer is a mixture of sand and clay. 最下面的一層是沙和泥的混合物。
- A fine layer of dust covers everything. 所有的東西都蓋了一層薄薄的灰塵。
- A layer, as of doubled-over cloth or of paperboard. 一層一層，如折疊過(guò)的布料或紙板的
