被沖洗掉;被洗掉
to be removed from the surface of sth or from clothes by washing
Those grease stains won't wash off.那些油漬洗不掉。
wash sth off (sth)
(從某物表面或衣服上)沖洗掉,洗掉
to remove sth from the surface of sth or from clothes by washing
Wash that mud off your boots before you come in.先把你靴子上的泥沖洗掉再進來。
釋義來自《牛津高階英漢雙解詞典》第 9 版