但是，稀土生产往往带有放射性，加工企业在冶炼和分离稀土时，也经常使用危险的化学品，周围的空气、水和土地容易遭到污染。
However, rare earth is often radioactive. Moreover, in the smelting and extraction of rare earth, dangerous chemicals are frequently used, thus polluting local air, water and land.
Farihi及其团队观察了斯隆数字巡天项目探测到的带有特定钙污染光谱标志的146颗白矮星。
Farihi and his team looked at 146 white dwarfs detected by the Sloan Digital Sky Survey that show the spectral signature of calcium pollution.
拉尼•帕德森告诉每日邮报网站说：“无人机四周的一圈布料带有负离子，能吸走空气中漂浮的污染物和颗粒物。”
'The fabric that goes around the drone has minus ions, which attracts pollutants and particles flying in the air, ' Lani Paderson told Dailymail. com.
难辨梭菌可以在被感染者使用过的器具中发现，人们可以通过接触带有细菌或孢子污染过的器具表面，经口感染。
C. difficile bacteria are found in the stool of an infected person, and others can become infected if they touch items or surfaces contaminated with the bacteria or spores and then touch their mouths.
来自病禽、病畜的肉带有细菌，任何食物都可能从土地中受污染的粪便或在储藏过程中染上细菌，在加工过程中为脏手所污染的食物或器具也会带有细菌。
Meat from diseased animals carries the Bacteria, and any food can pick it up from infected feces in the field or during storage or from contaminated food or utensils during food preparation.
有了这个额外的证据，约翰·斯诺就能够肯定地宣布这种被污染了的水携带有这种病毒。
With this extra evidence John Snow was able to announce with certainty that polluted water carried the virus.
由于净水处理厂被带有淤泥的洪水污染而没有饮用水，智利首都圣地亚哥大约二百万人离开了这座城市。
About two million people in the Chilean capital Santiago have been left without drinking water after sanitation plants were contaminated by muddy flood waters.
四分之一的地中海海岸被污染了，而且由于水中带有大量病菌，所以在水中游泳就不再安全了。
One quarter of the shores of the Mediterranean are polluted and are no longer safe for swimming, as a lot of diseases are present in the water.
四分之一的地中海海岸被污染了，而且由于水中带有大量病菌，所以在水中游泳就不再安全了。
One quarter of the shores of the Mediterranean are polluted and are no longer safe for swimming, as a lot of diseases are present in the water.
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