Agent orange is a defoliant that was used during the vietnam war era and known to cause cancer and other serious illnesses .
橙剂是一种脱叶剂，曾在越战期间使用，已知会致癌和其他严重疾病。
During the vietnam war , thousands of hectares of forest were destroyed with chemical defoliant .
越战期间，数千公顷的森林被化学落叶剂摧毁了。
The u.s. army says it is looking into a report that drums of the vietnam war-era toxic defoliant agent orange were buried at an american military facility in south korea 33 years ago .
Litigation about agent orange , a defoliant and herbicide used by american forces in the vietnam war , has provided the most extensive judicial discussion of toxic causation .
