Hepa
[医][=high efficiency particle arrestor]高效粒子阻拦装置
🗣️ 情景例句
It was a wonderful meal, Mrs. Stewart.
真是一顿精美的晚餐 Stewart太太。
Send a postcard to me when you arrive in Shanghai.
你到上海以后给我发张明信片。
Fred Pearson was walking through the university town of Oxford one morning in 1961.
1961年的某个早上，弗雷德·皮尔逊正步行通过牛津大学城。