dense mounting密: secret上: upper; up; upward蔟: a small bundle of straw,etc. ...浓密上层云: dense upper cloud (duc)上蔟密度: density of mounting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:密上蔟，即可在微信中查询翻译
