每年唐都要收下一两万美元的欠条，据他估算总数有三十万美元。
Each year, Don writes off between ten and twenty thousand dollars, and he estimates that he is owed around three hundred thousand dollars in total.
据他估算，经过大概八年的时间，那些私有化了的工厂就全面赢利了。
Over the course of about eight years, he estimates, those factories became fully profitable.
据他估算，两年来，吉尔伯特的农田已经有50% ~ 70%被出售用于开发。
He reckons that 50-70% of the farmland in Gilbert has been sold for development in the past two years.
据他估算，只有5%左右的纽约人开车进入曼哈顿，这些驾车人将支付所收费用的一半，而那些住在郊外的通勤人员及商务用车则支付另一半。
By his reckoning, only 5% of New Yorkers commute to Manhattan by car. Those drivers will pay about half the fees, suburban commuters and commercial vehicles the rest.
吉姆•斯特恩（JimStern）曾做过基金经理，后来筹够钱就开始拍摄电影。 据他估算，他拍电影只需要2000万至3500万美元，凭借这一点就可以抢走大公司的生意。
Jim Stern, a former fund manager who has raised enough money to start producing films, reckons he can undercut the big studios by making them for $20m-35m.
据估算，他的全球网络中，建有36个数据中心，有超过2百万台服务器。
It has built a global network of three dozen data centres with 2m servers, say some estimates.
据估算，他的全球网络中，建有36个数据中心，有超过2百万台服务器。
It has built a global network of three dozen data centres with 2m servers, say some estimates.
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