The verb " request " is mainly used in formal speech and writing , often in public notices and commonly in the passive form “request”这一动词主要用于庄重的讲话和文字中，常用于通告中，多用于被动式。
Passive glass - break detectors for use in buildings 室内用被动式玻璃破碎探测器
The comparison and transation of english and chinese passive voice 英汉语被动式的比较与翻译
Passive form and verb ' s transitivity 被动式与动词的及物性
On - line elimination of oil whip by passive electromagnetic damper 被动式电磁阻尼器在线消除油膜振荡研究
Passive restraint tell - tale 被动式乘员安全警报灯
There is now evidence that all the passive systems have worked well 现在有证据表明所有的被动式系统都运行良好。
Be worthy to be done 才能用动词不定式的被动式
Specifications and testing method of thermal performance for passive solar houses 被动式太阳房技术条件和热性能测试方法
Space heating is provided from the passive solar source of the conservatory 空间采暖由以带温室的被动式太阳能系统提供。
