复数： blotches

Identification of pathogen that causes strawberry brown blotch disease and observation of biological characteristics .

草莓褐斑病的病原鉴定及其生物学特性观察。

Establishment of rapid detection method for the pathogen of hami melon fruit blotch .

哈密瓜细菌性果斑病菌快速检测方法的建立。

" How long , " a doctor asked , " have you had this red blotch on your foot ? "

“多久了”一个医生问我：“你脚上的这个红斑长多久了”

He pointed to a dark blotch upon the starry sky some miles astern of us .

他指着我们身后繁星点点的天空中的一朵乌云。

Effects of climate factors on the epidemic of apple marssonina blotch in shaanxi province and related prediction models .

气象因素对陕西省苹果褐斑病流行的影响及预测模型。