您要查找的是不是：
- The jet plane is flying at the velocity of sound. 喷射机以声音的速度飞行。
- The plane is flying at the velocity of sound. 飞机以音速飞行。
- New planes can fly at the speed of sound. 新型飞机可以音速飞行。
- At the risk of sounding ungrateful, I must refuse your offer. 我甘受拂逆盛情之嫌，也必须谢绝你的提议。
- The velocity at the stagnation points is zero. 在停滞点处，流速为零。
- She started at the sound of my voice. 她听到了我的声音，蓦地一惊。
- He wheeled round at the sound of his name. 他一听到自己的名字就迅速转过身去。
- The crowd panicked at the sound of the explosion. 爆炸声一响，人群便惊慌起来。
- She started at the sound of a gun. 她听到枪声，吓了一跳。
- At the risk of sounding ungrateful, I must refuse your offer . 我甘受拂逆盛情之嫌;也必须谢绝你的提议.
- The birds scattered at the sound of the gun. 鸟群一听到枪声就四处飞散了。
- The horse bolted in terror at the sound of the gun. 枪声把马吓惊了。
- The dog cocked its ears at the sound of footsteps. 狗听到脚步声竖起了耳朵。
- The horse took a fright at the sound of the explosion. 马听到爆炸声受了惊。
- A crowd gathered at the scene of the fire. 许多人聚集在火灾现场。
- Alarmed at the first sound, we hit the dirt. 第一声警报一响我们就迅速卧倒。
- A man appeared at the castle gate in the guise of a woodcutter. 一个男子打扮成樵夫的模样出现在城堡的门口。
- The company declared a large dividend at the end of the year. 公司在年底宣布分发高额股息。
- In point of cost, we'll have to discuss it at the next meeting. 至于费用方面，我们只好留到下次会议再讨论。
- I quivered with fear at the sound. 我听见那种声音就吓得发抖。
