Under the new plan, customers would pay $45 bimonthly, instead of $18 a month – a substantialincrease.
根据新方案，顾客将每两个月支付$45，而不是每个月$18——一个相当大的增长。
《柯林斯英汉双解大词典》
2
Although all the signs are that Boravia's economy is now entering a period of sustained strength, the managers of the business do not expect a substantialincrease in sales.
As time went on, there was a substantialincrease in seeds from pioneer plants, attesting both to agricultural intensification and to an increasingly disturbed local environment.