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dew under (dripping from) trees
朝早く森を歩くと下露に濡れる。
If you walk in the forest early in the morning, you'll get wet from dew dripping from trees.
下露が草むらを濡らしている。
Dew dripping from trees is wetting the grass.
下露を避けて木陰を歩いた。
I walked in the shade of trees to avoid dew dripping from above.