"the knocker thudded against the front door"
"Bullets were thudding against the wall"
He dropped the bag..with a soft thud on the new mats.
His heart thudded inside his chest cavity.
Occasionally an apple thudded into the long grass.
牛津高阶第八版
美国韦氏词典
Dictionary.com
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维基百科 (自由的百科全书)