被冲洗掉;被洗掉
to be removed from the surface of sth or from clothes by washing
Those grease stains won't wash off.那些油渍洗不掉。
wash sth off (sth)
(从某物表面或衣服上)冲洗掉,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.先把你靴子上的泥冲洗掉再进来。
释义来自《牛津高阶英汉双解词典》第 9 版