1
a tripling of [sth]
The company reported a tripling of profits this quarter.
该公司报告本季度利润翻了三倍。
增至三倍；三倍
先理解核心含义，再看它在真实句子里的用法。
增至三倍；三倍
the act of multiplying by three
The company reported a tripling of profits this quarter.
该公司报告本季度利润翻了三倍。
多指数量、价格等增加到原来的三倍。
乘以三的行为
An act of multiplying by three.
The tripling of the city's population in ten years created a housing shortage.
这座城市的人口在十年内增至三倍，造成了住房短缺。
We were not prepared for the sudden tripling of our electricity bill.
我们对我们电费突然增至三倍毫无准备。
The company announced the tripling of its production capacity next year.
公司宣布明年将其产能增至三倍。
The company reported a tripling of profits this quarter.
该公司报告本季度利润翻了三倍。
There has been a tripling in the number of cases.
案件数量增加了两倍。
tripling 作名词常与 of 或 in 连用，表示数量或程度增加两倍（变为原来的三倍）。
The region saw a tripling of its population over the decade.
该地区人口在十年间增加了两倍。
Not this
The triple of the price is expected.
Use this
The tripling of the price is expected.
triple作为名词通常指三倍的数量或三倍的东西，但在此处表示'增加到三倍'时应使用名词tripling。
Not this
There was tripling in revenue.
Use this
There was a tripling of revenue.
tripling作可数名词需用冠词a，且常用介词of表示'（数量）的三倍增长'。
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页面下方列出了常见词形变化。学习时注意它们在句子中的语法位置。
Dictionary facts from ECDICT, WIKTIONARY.