self-propelling dredger自动: voluntarily; of one's own ac ...推进: push on; carry forward; adva ...挖泥: dredge机: machine; engine自动推进式挖泥船: self-propelled dredge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:自动推进挖泥机，即可在微信中查询翻译
