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to paint; to spread; to plaster; to apply (cream, lotion); to smear; to lacquer; to varnish; to put up (wallpaper)
壁にペンキを塗りました。
I painted the wall.
外出前に日焼け止めを塗ってね。
Put on sunscreen.
トーストにバターを塗ります。
I spread butter on the bread.