cankers
n.
（植物的）溃疡( canker的名词复数 );
（动物）耳溃疡;
腐败的影响;
腐蚀因素;
例句:
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In gardens, cankers are most prominent on apples and pear trees.
花园里，苹果树和梨树患枯枝病最明显。
来自柯林斯例句
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Cankers begin to form in mid-spring and soon afterwards shoots may die back.
来自BBC
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If a cankers spread around the entire trunk, it will cut off the food supply and the tree will die.
来自BBC
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She points out signs of stress on nearby trunks, splotches of disease, bark splitting into ugly cankers.
来自SA