Given the bumpiness of the road ahead, you might be better off with a crash helmet.考虑到你面前这条颠簸的道路, 你最好还是配个头盔吧....

bumpiness的音标：bumpiness的英式发音音标为：['bʌmpɪnəs]bumpiness的美式发音音标为：['bʌmpɪnəs]...

n.崎岖不平...