gathering trackladder track梯: ladder; stairs; steps; stair ...线: thread; string; wire调车梯线: shunting necks栅形梯线: gridiron ladder梯厢尺寸: elevator car dimensions, car dimensions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:梯线,即可在微信中查询翻译