The transmission of N. meningitidis is facilitated by overcrowded housing at family level and by large population displacements due to pilgrimages and traditional markets at regional level.

由于家庭层次过度拥挤的住房以及地区层次朝圣和传统市场造成大量人口流离失所，推动了脑膜炎奈瑟菌的传播。

youdao

The U. n. World Food Program says Israel's decision to hold its fire for three hours a day in Gaza City will help ease the plight of the conflict-stricken population.

联合国世界粮食计划署表示，以色列有关每天在加沙城停火三小时的决定有助于缓解受到战火围困的居民的困境。

youdao

The population mean is often written "x-bar." If you have a sample with n observations, it's the summation i = 1 to n of xi/n--that's the average.

人口均值经常写成“x-条形柱”，如果你有一个样本有n个观测者，是从 i=1到n和的xi/n，这是平均值。

youdao

The U.N.Fund for Population Activity says more than 600,000 African women already suffer from obstetric fistula with as many as 30,000 new cases each year.

VOA: standard.2009.12.23

They divide by n-1 to make it an unbiased estimator of the population variance, but I'm just going to show it in a simple way here.

当除以n-1表示的是对总体的,无偏估计,我在这里只是说的简单一点

耶鲁公开课 - 金融市场课程节选

Authorities there must buy new equipment." The U.N.agency reports mortality rates in Gaza are about 30 percent higher than among the Palestinian population in the West Bank.

VOA: standard.2010.06.01

He later joined the U.N. population agency and brought in Laquian.

CNN: A President's Guardian Angel

"With only a small variation in fertility, particularly in the more populous countries, the total could be higher: 10.6 billion people could be living on Earth by 2050 and more than 15 billion in 2100, " says the Population Division of the U.N.

CNN: U.N.: World can 'thrive' as population reaches 7 billion

The U.N. estimates the Rohingya population in Myanmar at 800, 000 people.

FORBES: Myanmar's Ethnic Conflict Flares In Shadow Of Asian Oil Investments