1) gum strcak
树胶条斑(纸病)
2) gum spot
树胶斑(纸病)
3) gum streak
树胶条斑
4) bark specks
树皮斑点(纸病)
5) shangles
['ʃæŋɡlz]
胶料亮斑(纸病)
6) bark specks
树皮尘埃,树皮斑点(纸病)