a bout of gagging
a bout of 后接不可数名词，表示一阵发作，常用于描述咳嗽、干呕等症状。
The patient had a brief bout of gagging during the dental exam.
牙科检查时，病人短暂地干呕了一阵。
干呕；作呕
gaggings — plural of gagging
呕吐动作或反射；矫正；冷矫正
The act or reflex of gagging; a retching or choking movement.
呕吐动作或反射
A gag motion or reflex.
The smell of the medicine caused a sudden gagging that surprised everyone.
药的味道引起了一阵突如其来的干呕，让大家都吓了一跳。
用法提示：gagging 在此作名词，指呕吐动作或反射。
His gagging lasted only a few seconds, and then he felt fine.
他的干呕只持续了几秒钟，随后他就感觉好了。
用法提示：gagging 作名词，表示一次作呕的动作或反射。
She tried to hide her gagging while the doctor examined her throat.
医生检查她喉咙时，她努力掩饰自己的作呕反应。
用法提示：gagging 是名词，指不自觉的呕吐反射。
a bout of 后接不可数名词，表示一阵发作，常用于描述咳嗽、干呕等症状。
The patient had a brief bout of gagging during the dental exam.
牙科检查时，病人短暂地干呕了一阵。
suppress 后直接接名词 gagging，表示压抑、忍住这种反射动作。
He tried to suppress the gagging as the nurse swabbed his throat.
护士擦拭他的喉咙时，他努力忍住干呕。
gagging 放在另一名词前作定语，说明是哪一种反射或感觉，如 gagging sensation。
The gagging reflex keeps food from slipping into the windpipe.
呕吐反射能防止食物滑入气管。
suffer from 后接名词，表示长期或反复受到某种不适的困扰。
Some patients suffer from gagging when the impression tray is inserted.
有些病人在放入牙模托盘时会干呕。
grammar · medium
易错句子He had many gagging during the dental visit.
正确表达He had many gaggings during the dental visit.
gagging 是可数名词，many 后必须接复数形式 gaggings；汉语名词没有复数词尾，容易漏加 -s。
grammar · medium
易错句子He had less gaggings after taking the medicine.
正确表达He had fewer gaggings after taking the medicine.
gaggings 是可数复数，表示数量减少时要用 fewer，不用 less；less 修饰不可数名词。汉语“更少”不区分可数性。
retching 强调胃部和腹部剧烈收缩、反复想吐却吐不出东西的动作；gagging 多指喉咙受刺激（如压舌板、异物）引起的咽反射，常是一次性的作呕反应，两者在医学语境中偶有重叠但不能随意互换。
vomiting 指胃里的东西实际被吐出来；gagging 只是作呕反射，通常没有东西吐出，因此不能替换使用。
choking 指气道被食物或异物堵住、无法呼吸；gagging 是咽部的反射动作，气道并没有阻塞，人仍能正常呼吸。
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