基本解释n. 安全帽英汉例句雙語例句Voluntary safety helmet use by those accident-involved motorcycle riders was lowest for untrained, uneducated, young motorcycle riders on hot days and short trips.事故摩托車手中未受培訓的、未受教育的、年輕的人群在天熱或短途時自願珮戴頭盔的比例最低。motorcycle safety helmet更多例句