Complaint is the noun form of the verb "complain," meaning "to express dissatisfaction or resentment." It is a countable noun, with the plural form being "complaints."
1. 抽象抱怨和具体原因
抽象抱怨时不可数： An expression of pain, dissatisfaction, or resentment.
抱怨的具体原因时可数： A cause or reason for complaining, a grievance.
2. complain的名词形式
complain的名词形式是可数的： complaint可数。比如 "File a complaint."
3. complaint的用法和例句
complaint的意思： 抱怨、控诉、委屈、痛苦根源。
complaint用作名词表示： "抱怨、诉苦、疾病、委屈"。
例句： "His numerous complaints are all variations on a."
In conclusion, complaint is indeed a countable noun and can be used to signify various reasons for expressing dissatisfaction or resentment. Whether it is an abstract expression of discontent or a specific grievance, the term "complaint" remains versatile in conveying dissatisfaction in various contexts.