the infrequency of [something]
The infrequency of earthquakes in this region surprises geologists.
该地区地震的稀罕让地质学家感到惊讶。
稀少；不频繁
冷清；人迹罕至；幽僻；不经常的特性；稀少性。；人迹罕至的状态；隔绝；隐居。；稀罕
The quality or condition of occurring rarely; rarity.
不经常的特性；稀少性。
The characteristic of being infrequent.
人迹罕至的状态；隔绝；隐居。
The state of being unfrequented; isolation; seclusion.
The infrequency of his visits made her sad.
他来访的稀少让她伤心。
用法提示：infrequency 作为名词，表示‘稀少’，在句中作主语。
Due to the infrequency of trains, we had to wait for an hour.
由于火车班次稀少，我们不得不等了一个小时。
用法提示：infrequency 作介词宾语，表示‘不频繁’。
The infrequency of earthquakes in this region is unusual.
这个地区地震的罕见很不寻常。
用法提示：infrequency 作为名词，表示‘罕见’，在句中作主语。
The infrequency of earthquakes in this region surprises geologists.
该地区地震的稀罕让地质学家感到惊讶。
常与动词occur、happen等连用，表示‘很少发生’
Such extreme weather events occur with infrequency.
此类极端天气事件很少发生。
Due to the infrequency of bus service, residents often wait long.
由于公交服务稀少，居民常常等待很久。
grammar · medium
易错句子This is an infrequency event.
正确表达This is an infrequent event.
名词"infrequency"误用作形容词，应使用形容词"infrequent"。
grammar · medium
易错句子He visits us infrequency.
正确表达He visits us infrequently.
名词"infrequency"误用作副词，应使用副词"infrequently"。
词性不同：infrequency为名词，infrequent为形容词。
词义相反：infrequency表示稀罕，frequency表示频繁。
近义但语气不同：rarity常强调珍贵罕见的事物，infrequency强调发生次数少。
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