n.溃疡；(树的)癌肿病；毒害；弊害
v.患溃疡；腐蚀；溃烂
Fatigue, stress or allergies can increase the likelihood of a canker sore. 疲劳，压力或过敏能增加口腔溃疡发作的可能性。
Anecdotal evidence suggests that diets high in sugar, citrus, and cereal grains may trigger canker sores. 有事实证据表明大量饮用糖，柑橘，谷粒或许会触发口腔溃疡。
