1·Scientific analysis reveals that the colors were derived from ocher and other iron oxides ground into a fine powder.
科学分析表明，这些颜色是源自赭石和其他铁氧化物磨成的细粉。
2·Other filters and chemical "scrubbers" catch oxides of sulphur and nitrogen that would otherwise cause acid rain.
其他的过滤器以及化学“捕捉器”负责处理能够引起酸雨的硫氧化物和氮氧化物。
3·Until now, the quotas mostly covered alloys and oxides with a rare earth content of at least 50 percent.
直到今天，稀土资源出口配额大部分涵盖了至少50%的稀土合金和氧化物。
4·In the week of the Asilomar meeting Science published evidence that more pollutants than previously appreciated, including oxides of sulphur, are getting into the lower stratosphere.
在持续一周的会议期间，科学家证实现在的污染比早先预计的更严重，含硫氧化物进入平流层底部。
5·Much of the arsenic found in these studies is in an inorganic form — the oxides arsenate and arsenite — known to sicken people exposed via drinking water.
研究表明，大部分砷以无机形式即氧化物砷酸盐和亚砷酸盐存在，人们通过饮水的方式摄入而患病。