He could hear the whir of a vacuum cleaner.
他能听到吸尘器的嗡嗡声。
Even when the car is off and locked, these fans whir around, so when you step back into it you don't need to crank up the power-hungry air conditioning.
即使在汽车熄火及锁着的时候，这些冷却风扇也在呼呼旋转着，所以当你回到车内时，你无需开大耗电的空调。
With my face close to the screened window, I lay in the darkness, listening to the sounds of summer: the ripple of the creek, the loud whir and chirp of cicadas and tree frogs.
我脸挨着纱窗，静静地躺在黑暗中，聆听着夏日的种种声响：溪水潺潺，蛙鸣蝉噪。
The house and garden were ablaze with lights, and the whir of electric fans was everywhere.
满屋子和满园子的电灯都开亮了，电风扇荷荷地到处在响。
A trip to a big city can leave us exhilarated but also drained by the energetic whir of life there.
去大城市令人兴奋，却也被充满活力的快节奏生活弄得筋疲力尽。
An immense flock of jackdaws rose above the walls and swept round in the air with loud caws, and the whir of thousands of wings.
围墙上方惊起了一大群乌鸦，聒噪着，响亮地扇动着上千只翅膀，在空中盘旋。
Whether described as a whir, hum, or buzz and whether psychological, natural, or supernatural no one has yet been able to locate the sound's origin.
不论它被形容为一个呼呼声，哼哼声或嗡嗡声，还是心理作用，自然或超自然现象，至今还没人能找到声音的来源。
It wasn't long ago we listened to the whir of a dot-matrix printer spitting out documents from our computers, now a 3D printer renders any object we can dream up the same way.
事实上，能让我们的电脑打印纸质文档，还是不久之前才发明出来的，而现在3D打印机又以同样的方式，使我们梦想的各种物体都能呈现在我们眼前。
It wasn't long ago we listened to the whir of a dot-matrix printer spitting out documents from our computers, now a 3D printer renders any object we can dream up the same way.
事实上，能让我们的电脑打印纸质文档，还是不久之前才发明出来的，而现在3D打印机又以同样的方式，使我们梦想的各种物体都能呈现在我们眼前。
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