at a rough estimate

常见例句

What do you know about Nigeria? At a rough estimate, it is…
你對尼日利亞了解多少？據粗略估計，它有三個英國那麽大。 …
sxfast.com
The builder said that at a rough estimate the job would take about a fortnight to complete.
施工員說，粗略估計一下，這一任務要兩周才能完成。
And used respectively direct calculation and human capital method to reckon up direct and indirect economic burden. At last a rough estimate of the lost of economy by AIDS will be made;
用直接法、人力資本法分別估算艾滋病的直接和間接經濟負擔，估算艾滋病造成儅地的經濟損失大小；

At that size, a very rough estimate tells us Kong could weigh as much as 60 tons.
FORBES: King Kong Vs. T. Rex