"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.
牛津高階第八版
美國韋氏詞典
Dictionary.com
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維基百科 (自由的百科全書)