| 单词 | ventilation system |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔inefficient〕The tunnel has an inefficient ventilation system.这个隧道的通风系统效果不佳。麦克米伦高阶〔ventilate〕They installed a new ventilation system in the building.他们给这栋楼安装了新的通风系统。韦氏高阶The office has recently been refurbished and the ventilation system improved.这间办公室最近重新修缮油漆过，通风系统得到了改善。剑桥国际 |
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