Subject + 擦干 + Object
擦干 (cāgān) means "to wipe dry" and combines the verb 擦 (cā, "to wipe") with the resultative complement 干 (gān, "dry"). The complement indicates that the wiping action results in the object becoming dry. It is used for drying surfaces, dishes, or other wet items.
洗完碗以后记得用布擦干。
Xǐ wán wǎn yǐhòu jìde yòng bù cā gān.
Remember to dry the dishes with a cloth after washing them.
她把桌子上的水擦干了。
Tā bǎ zhuōzi shàng de shuǐ cā gān le.
She wiped the water on the table dry.
下雨淋湿了头发,赶紧擦干吧。
Xià yǔ lín shī le tóufa, gǎnjǐn cā gān ba.
The rain got your hair wet — hurry up and dry it off.