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- The results indicated little difference in the geometric mean diameter (GMD) of the ETS particles from those in background air. 研究香烟数量和不同厂牌、不同采样区域和不同的通风速率的结果。
- Background Air Pollution Monitoring Network 气象组织本底空气污染监测网
- The air in the garden was warm and fragrant. 花园里的空气一片温馨。
- The archers sent their shafts through the air. 弓箭手向空中射出利箭。
- He has a strong political background. 他有强大的政治背景。
- Climate factors influencing bacterial count in background air samples 本底空气取样里气候因子影响的细菌数
- That incessant background music gets on my nerves. 那没完没了的背景音乐令我非常烦恼！
- The lack of air in the room make everyone sniffle. 屋子里空气缺乏，使得每个人都频频吸气。
- During the intermission, let's go out for some fresh air. 幕间休息时，我们出去呼吸呼吸新鲜空气吧。
- The air held a foretaste of a storm. 天气有要括大风的迹象。
- He has a working-class background. 他是工人阶级出身。
- Get the fall in the background, will you? 把瀑布拍进背景中去好吗？
- The air was reeking with the smell of tobacco. 空气中弥漫着烟草的气味。
- A background accompaniment, as for a performer. 伴奏为一个演奏者配音伴奏
- A walk in the fresh air will pep me up. 我在空气新鲜的地方散步就感到精神饱满。
- He served one month with the Air Army in Kuwait. 他在科威特的空军里服役1个月。
- Large air and navel forces were set into action. 庞大的空军和海军部队开始行动了。
- His modesty [air of joviality] was all put on. 他的谦逊[愉快的样子]都是装出来的。
- She came from a privileged background. 她出身於特权阶层。
- Ida was choking with the dry air. 空气干燥，艾达感到喘不过气来。
