Encara no tenim significats per a "deep thrum".
1He made no answer, but listened to the deep thrum of the engines.
2Somewhere in the distance, they could hear the steady, deep thrum of Federation transport engines.
3The gut- deep thrum again, sustained this time.
4The deep thrum of vintage V8s are sounding across Taranaki as hundreds of American classic cars turn the region into petrolhead heaven.
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