thrum
verb uk/θrʌm/ us/θrʌm/ -mm-
[ I ]发出连续低沉的声音
to make a continuous low sound
The engine was thrumming steadily. 发动机稳稳地低声轰鸣。
[ T ]（用吉他或其他弦乐器）弹出曲调，弹出节奏
to play a guitar or similar stringed instrument in a way that makes a rhythm
He can thrum a guitar, but he's not Jimmy Hendrix. 他会弹吉他，但不是吉米 · 亨德里克斯。
thrum
noun [ S ] uk/θrʌm/ us/θrʌm/
连续低沉的声音
a continuous low sound
the steady thrum of horses galloping 马匹奔驰时发出的持续闷响