At that moment the sound of a motor car was heard in the drive.
这时，传来一阵驾驶机动车的马达声。
The children were running to move the bag of rice when they heard the sound of a motor bike.
孩子们正要跑过去搬开那袋米，这时他们听到了摩托车的声音。
He sat down miserably, as if I had pushed him, and simultaneously there was the sound of a motor turning into my lane.
他苦恼地坐了下来，仿佛我推了他似的，正在这时传来一辆汽车拐进我巷子的声音。
For some the sound could make sleep harder, but for others, the steady beat of the ticking, or the quiet hum of an electric motor in a fan can be very peaceful.
有些东西发出的声音令你很难入睡，但有些东西是固定行走或敲打的，风扇有规律的转动的声音听起来很和平。
After Noel and the boat pulled away, the fading of the sound of its motor left behind a suddenly loud silence.
诺埃尔开着船离开了，渐渐远去的马达声过后是一片巨大的沉寂。
Some young children, riding a bicycle or Brisk motor sound of electric vehicles, in the past Jialingjiang edge.
亦有一些年轻的孩子，骑着轻灵的单车或马达隆隆的电动车，在嘉陵江边呼啸而过。
To verify the accuracy and reliability of the system, contrast tests on reference sound power source and small motor are performed respectively in a semianechoic chamber and a common room.
为了验证噪声检测系统的精度和可靠性，在半消声室和普通房间内，分别对标准声功率源和小型电机作声功率对比测量试验。
Through testing on muffler on a certain motor, the paper evaluates the static performance of sound transmission loss of the muffler.
通过对某种发动机使用的消声器进行测试，对消声器的静态传声损失性能作出评价。
For a long time the only sound was the hum of the motor and the tires on the pavement.
很长时间里，唯一的声音就是马达的嗡嗡声和轮胎在路上的磨擦声。
Then he is driving a car, and we are falling asleep before he gets home, alert, even in our dreams, to the sound of his motor gearing down.
再往后他便学会了开车，而在他回家之前，我们就睡了，但即便在梦中，也会竖起一只耳朵听着他车子减速的声音。
When the lift starts up from the top floor, you can hear a dimmed sound of the top propulsion motor starting up.
而升降机由最顶层起动时，可隐约听到井道顶的驱动机芯开动。
When the lift starts up from the top floor, you can hear a dimmed sound of the top propulsion motor starting up.
而升降机由最顶层起动时，可隐约听到井道顶的驱动机芯开动。
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