滑滑板时带护肘和护膝是必要的.Elbow pads and knee pads are essential on a skateboard.所有参赛者比赛时都必须佩带安全头盔及护膝、肘等可能必要的安全护具.It is mandatory that riders wear and approved safety helmet during racing.我要一副护腕和两副护膝.I want a pair of wrist protecto...
周未时,海滨上满是喧哗的游客[度假者].At weekends the beach is crowded with noisy trippers.人走进喧哗的群众里去,为的是要淹没他自己的沉默的呼号.Man goes into the noisy crowed to drown his own clamour of silence.喧哗的学生封要读书的学生发生扰乱的作用.Noisy students have a distractive...