您要查找的是不是：
- Combined Passive Active Detection 被动与主动综合探测(雷达)
- Passive Active Detection and Location 无源与有源探测和定位(声呐)
- Passive Active Surveillance System 被动一主动监视系统
- He played a passive role in the marriage. 他在婚姻中扮演了一个被动的角色。
- The office has been humming with activity. 办公室一直忙着搞活动。
- He had a passive expression on his face. 他脸上有一种漠然的表情。
- In spite of my efforts the boy remained passive. 尽管我努力，那男孩还是不起劲。
- The slaves gave passive obedience to their master. 奴隶们乖乖地服从他们的主人。
- The threat of war has depressed business activity. 战争的威胁使经济萧条。
- There has been a lot of activity in the town today. 今天市中心相当热闹。
- The town was humming with activity. 该市镇生气勃勃，呈现一片热闹的景象。
- Passive character, attitude, quality, or behavior. 消极主义消极被动的性格、态度、品质或行为
- Stamp collecting is my favorite activity. 集邮是我最喜爱的消遣。
- The store was a scene of great activity. 这家商店顾客盈门。
- He once engaged in anti-government activity. 他一度从事反政府的活动。
- The office is humming with activity. 办公室里一片忙碌。
- This construction should not be confused with the regular passive. 这种句法结构不可与按规则变化的被动语态相混淆。
- A center of interest or activity. 中心兴趣或活动的中心
- Showing no optical activity in polarized light. 无旋光的极化光下无光学反应的
- An increase, as in movement or business activity. 进步，改进，改善运动或商业活动的进步或兴隆
