steplesshull无: not have; there is not; be w ...阶: steps; stairs式: type; style艇: a light boat壳: shell; hard surface下载手机词典可随时随地查词查翻译关注微信公众号：chachacidian，回复:无阶式艇壳滑航艇，即可在微信中查询翻译
