self-ventilation自动: voluntarily; of one's own ac ...通风: ventilate; air自: self; oneself; one's own冷: cold自动通风: automatic ventilation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:自动通风, 自冷，即可在微信中查询翻译
