1. Arsenic is widely distributed in nature and also an important environmental pollutant. 砷广泛分布于自然界,而且是一种重要的环境污染物。
2. He tells us that his first task was to develop instruments to measure the exact amounts of a(arsenic) in the water. 他告诉我们他首要的任务就是研制工具以便精确的测量出水中所含的砷的含量。
3. Researchers at the University of Chicago in the United States found that soft-shell shrimp/prawn contains high concentration of - five potassium arsenic compounds. 美国芝加哥大学的研究人员,通过实验发现,虾等软壳类食物含有大量浓度较高的-五钾砷化合物。
英英解释
n.
1. a very poisonous metallic element that has three allotropic forms; arsenic and arsenic compounds are
2. a white powdered poisonous trioxide of arsenic; used in manufacturing glass and as a pesticide (rat