Analysing the genetic diversity of the samples allowed the researchers to make a rough calculation of the size of the woolly-rhino population over time.

分析这些样本的基因多样性能够让研究人员粗滤估算各时期披毛犀的数量。

Rough calculations show that the savings made by employers when their staff works from home are of similar value to the compensation workers should receive for setting up offices at home.

粗略计算表明，当员工在家工作时，雇主所节省的费用与员工在家设立办公室所应获得的补偿金额相当。

Scientists are not exactly sure what the number is, as different parts of the brain fire at different rates, but a paper suggests a rate of 0.29 per second, based on rough calculations.

科学家们并不确切确定这个数字是多少，因为大脑的不同部分以不同的速率放电，但是有论文根据粗略的计算提出了每秒 0.29 次的速率。