您要查找的是不是：
- Hydrophone Underwater directional microphones for passive sound detection. 水听器,具有方向性的水下麦克风,用于被动接受声音。
- A STUDY ON UNDERWATER PASSIVE SOUND REFLECTORS 水下物理目标声反射器研究
- Passive Sound Recognition Technology for the Targets in Battlefield 战场目标被动噪声识别技术
- The Post Processing of Passive Sound Detecting Fuse Systems 被动声探测引信系统的后置处理
- Gosh, that guy is sounding off again! 天哪，那个家伙又在夸夸其谈了！
- He played a passive role in the marriage. 他在婚姻中扮演了一个被动的角色。
- A sound mind is inseparable from a sound body. 健全的精神是与健康的身体是不可分割的。
- 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。
- Alarmed at the first sound, we hit the dirt. 第一声警报一响我们就迅速卧倒。
- He has told a story which sound not objective. 他讲了听起来不真实的一个故事。
- Passive character, attitude, quality, or behavior. 消极主义消极被动的性格、态度、品质或行为
- I caught a curious sound in the neighboring room. 我听到隔壁房间里有奇怪的响声。
- I was awakened by the sound of church bells. 我被教堂的钟声吵醒。
- The sound of danger gives wings to his flight. 危险的信号加速了他的逃跑。
- I quivered with fear at the sound. 我听见那种声音就吓得发抖。
- Her mouth open and shut, but no sound come out. 她的嘴张开又闭上了，没有发出声音。
- A study on the method of passive sounding of channels for short wave frequency-hopping system 短波跳频系统信道的无源探测研究
- He's always sounding off about how he would manage the firm. 他总是大言不惭地说他能把公司经营好。
