fainting can be a sign of sth
fainting 作主语，表示一种现象；can be 后接名词短语，说明可能性。
Fainting can be a sign of a heart problem.
晕厥可能是心脏问题的征兆。
昏厥；晕倒
faintings — plural of fainting
暂时失去意识的行为；昏晕；不省人事
暂时失去意识的行为
An act of collapsing into a state of temporary unconsciousness.
The sudden heat caused several people to suffer from fainting.
突然的高温导致几个人昏厥。
用法提示：名词'fainting'作介词宾语，表示'昏厥'这一状态或事件。
She was so frightened by the news that she had a fainting spell.
她被这个消息吓得昏厥了一阵子。
用法提示：名词'fainting'与'spell'搭配，表示'一阵昏厥'。
Dehydration is a common cause of fainting during exercise.
脱水是运动时昏厥的常见原因。
用法提示：名词'fainting'作介词宾语，表示'昏厥'这一现象。
fainting 作主语，表示一种现象；can be 后接名词短语，说明可能性。
Fainting can be a sign of a heart problem.
晕厥可能是心脏问题的征兆。
experience 后接名词，表示经历某种状况；fainting 在此作不可数名词。
Some people experience fainting when they stand up too quickly.
有些人在起身过快时会经历晕厥。
of 后接名词，说明风险的具体内容；该结构常用于医学或健康语境。
The medication can increase the risk of fainting.
这种药物会增加晕厥的风险。
grammar · medium
易错句子She had three fainting last year.
正确表达She had three faintings last year.
fainting 表示一次次的昏厥发作时是可数名词，数词 three 后必须用复数 faintings；汉语名词没有复数词尾，学习者容易保留单数。
grammar · medium
易错句子The fainting of her frightened the children.
正确表达Her fainting frightened the children.
英语说“某人的晕倒”要用物主代词 her 直接修饰 fainting，不能用 the fainting of her 这种汉语“她的晕倒”式的 of 结构。
faintness 说的是头晕、发虚的“感觉”，人还清醒；fainting 说的是真的失去意识的“昏倒”这件事。想说“差点晕过去、一阵眩晕”用 faintness，想说“晕倒了”用 fainting。
blackout 语义更宽，还可指醉酒后失忆或停电，且常暗示事后记不清；单纯因脑部供血不足而昏倒，日常更常说 fainting。
syncope 是医学和正式文体用词，多见于病历、论文；日常口语说“晕倒”用 fainting，两者指同一现象，选词取决于语域而非含义。
发长 /eɪ/ 音 (如 rain, wait)
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