Exact(11)
Then I heard a low buzzing sound.
Just before 9am the crew heard a low thud.
He was getting pretty fidgety when he heard a low drone from the back room.
I then heard a low roar; a tanker truck was bounding up the hill.
Dean was in the courtyard pointing out the Southern Cross in the night sky, until someone heard a low groan.
When he heard a low thumpp of a truck slamming over 2nd Ave .he thought it was antiaircraft fire.
Similar(49)
For 10 seconds she heard a low-pitched sound, as if "the wind were blowing with a melancholy roar", and, ever since, had been interested in intimating this transient moment.
You can probably hear a low hum.
Near the quieter 10th hole, you would be more likely to hear a low whimper or wail.
"You could hear a low, rumbling roar, from miles away, just chewing up everything in its path".
After a while you begin to hear a low whirring undertone and a repeated sound that is a little like a very far-off foghorn.
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