circular air grid圆形: circular; round通风: ventilate; air栅: railings; paling; palisade; ...圆形通风井: circular ventilation shaft通风栅: air grate; air hole grate; stack bond; ventilation fence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:圆形通风栅，即可在微信中查询翻译
