crepitation
/ˌkrepɪˈteɪʃən/noun
1- a crackling or rattling sound噼啪声; 格格声：
pistol-like crepitations.
手枪似的喀嚓喀嚓声。
1.1
- Medicine a crackling sound made when breathing with an inflamed lung, detected using a stethoscope【医】（用听诊器察觉的发炎的肺部呼吸时发出的）咿轧音, 捻发音。
1.2
- mass noun Entomology the explosive ejection of irritant fluid from the abdomen of a bombardier beetle【昆】（来自放屁甲虫腹部的）刺激性液体的喷射。
词源
mid 17th cent.:from French crépitation or Latin crepitatio（n-）, from the verb crepitare （see CREPITATE）.