Correct

锈斑

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Strokes

Definition

rust spot/blemish (on plants)

Example

As a Noun

rust spot/patch

1
Píngguǒ
苹果
shàng
上
yǒu
有
xiùbān
锈斑
  
。

The apples are rusty.

2
Shùyè
树叶
shàng
上
de
的
xiùbān
锈斑

rusts on the leaves