double yellow line
noun [ C usually plural ] uk/ˌdʌb.əl ˌjel.əʊ ˈlaɪn/ us/ˌdʌb.əl ˌjel.oʊ ˈlaɪn/
（英国路边表示禁止停车的）双黄线
in Britain, two lines of yellow paint that are put along the side of a road to show that vehicles may never be parked there
It's an offence to park on double yellow lines. 在双黄线内停车属违章行为。
See also: yellow line