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fivefold + noun
修饰名词，表示“是原来的五倍”，常与 increase、growth、rise 等搭配。
The company experienced fivefold growth in five years.
该公司在五年内经历了五倍的增长。
五倍的；五重的
先理解核心含义，再看它在真实句子里的用法。
五倍的；五重的
having five units or components
The company experienced fivefold growth in five years.
该公司在五年内经历了五倍的增长。
五倍的
Five times as much or as many.
五个一组的；五重的；五倍的。
In a group or series of five; consisting of five together as one; quintuple.
The company reported a fivefold increase in sales this quarter.
公司报告本季度销售额增长了五倍。
The book's fivefold structure makes it easy to follow.
这本书的五重结构使它容易阅读。
The benefits of the new system are fivefold.
新系统的好处有五方面。
修饰名词，表示“是原来的五倍”，常与 increase、growth、rise 等搭配。
The company experienced fivefold growth in five years.
该公司在五年内经历了五倍的增长。
用于描述数量或规模的变化，多与 increase、grow、rise 等动词连用，常置于动词之后。
The city's population increased fivefold over the past decade.
过去十年里，该城市的人口增加了五倍。
Not this
The company fivefolded its profits last year.
Use this
The company increased its profits fivefold last year.
fivefold 是形容词或副词，不是动词，不能直接作谓语。表达“增加五倍”时需用 increase 等动词，再用副词 fivefold 修饰。
Not this
The population has grown fivefold times.
Use this
The population has grown fivefold.
fivefold 本身已含有“五倍”即 five times 的意思，后面再加 times 会造成语义重复；作副词时直接修饰动词即可。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
五倍的增长
The company reported a fivefold increase in profits.
公司报告利润增长了五倍。
增加五倍
The population increased fivefold over the century.
一个世纪里人口增加了五倍。
五倍的上升
There has been a fivefold rise in housing costs.
住房成本上涨了五倍。
增长五倍
Online sales grew fivefold in two years.
两年内在线销售额增长了五倍。
五倍的减少
The new process led to a fivefold reduction in waste.
新工艺使废物减少了五倍。
Use fivefold naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
five（五）+ fold（折叠）= 叠成五层，即“五倍的；五重的”。
语域：formal 常见场景：academic papers、technical manuals、formal structural descriptions 作形容词表示‘五重的、有五部分/成分的’时，通常用于较正式的书面语境，如学术或技术性描述；日常口语中较少使用，更常说 five parts。另 fivefold 也可作副词，本条主要针对形容词用法。
这些词都含有拼写相同的结尾 '-fold'，且该音节读作 /fəʊld/，所以尾音一致。但注意，它们与 'fivefold' 并不形成严格押韵，因为 'fivefold' 的重音在 /faɪ/，而 'tenfold'、'twofold'、'threefold' 的重音分别在 /ten/、/tuː/、/θriː/。不要只凭拼写 '-fold' 就认为它们都与 'fivefold' 押韵。
Dictionary facts from ECDICT, WIKTIONARY.