Behind him, he heard the even thwack, thwack, thwack of the dye block slapped down on the cloth squares. A PLAGUE OF ANGELS (1994)Again Nick jumped and this time, as it passed, he gave the bull a great thwack on its rump with the sign. THE LEGEND OF CAPTAIN SPACE (1994)
He felt a sting in his left ear but didn't really feel the blow, just heard the thwack. SPIDERTOWN (1994)
极少使用。在柯林斯辞典中， thwack 属于使用频率排在后 50% 的词语之一。
thwack 的定义—— 柯林斯 英语词典
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