dropped kerb
noun [ C ] UK uk/ˌdrɒpt ˈkɜːb/ us/ˌdrɑːpt ˈkɝːb/ (US curb cut)
（经切割后降低高度，与马路相平，方便轮椅、婴儿车等上下人行道的）路缘矮坡，下沉式路缘
a place where thekerb (= edge of a raised path next to the road) is made to slope down to the level of the road, so it is easier for people with vehicles such as wheelchairs or pushchairs to get on or off the path
We must take the lead in providing dropped kerbs at junctions and ramps, and tactile information and acoustic signals at road crossings. 我们必须带头在路口和坡道设置下沉式路缘，在道路交叉口设置触觉信息和声音信号。