修改了
In addition, AChEis are also found in sarin, a nerve gas released into the atmosphere when American forces fired rockets at the Khamisiyah munitions depot.
ECONOMIST: Was Gulf-war syndrome caused by chemical poisoning?
英汉双解词典包含3185865条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。