The city's average concentration of PM2.5 was 28 micrograms per cubic meter during the period.

在此期间，北京PM2.5的平均浓度为立方米28微克。

Phloem from the tree at the eruption site had 9.5 micrograms of the metal per kilogram.

位于喷发点的树上的韧皮部中千克含有9.5毫克汞。

The concentrations of 70 micrograms per liter.

浓度为升70微克。

Those cities both measured at over 92 micrograms.

这两个城市的PM2.5浓度都超过了92微克/立方米。

For comparison, the annual U.S. budget would be enough to create only a few micrograms of antimatter.

相比之下，美的预算足以制造出几微克的反物质。

One microgram is the lethal dose for a human being.

只需百万分之一公克的钸，就足以致命。

The average concentration of PM2.5 hazardous particles was 30 micrograms per cubic meter, down 9.1 percent year-on-year.

粒物（PM2.5）平均浓度为 30 微克/立方米，同比下降 9.1%。

The Chinese city of Hotan was second, with 94.3 micrograms.

中和田市位居第二，PM2.5浓度为94.3微克/立方米。

Even a small amount (less than a microgram) is enough to kill a healthy adult.

仅仅很小的量（小于一微克）就足以杀死一个健康成人。

124 micrograms is all it takes to kill you, about the same weight as two human eyelashes.

仅 124 微克就可以致人死亡，也就相当于人类两根睫毛的重量。

This week, a high of more than 1,000 micrograms was recorded in one part of South Korea.

本周韩的一个地区创下了超过1000微克的记录。

The average concentration of PM2.5 in Beijing is 33 micrograms per cubic meter in the first 11 months of this year.

今前 11 个月，北京的 PM2.5 平均浓度为立方米 33 微克。

If they tested your urine and you had a higher concentration than 12 micrograms per millilitre, you were out.

如果他们检测你的尿液浓度超过12μg/mL，你就出局了。

The city's average concentration of PM2.5 stood at 33 micrograms per cubic meter in the January to May period.

在 1 月至 5 月期间，北京的 PM2.5 平均浓度为立方米 33 微克。

The E.P.A. has set the safety threshold for PM 2.5 at a yearly average of 12 micrograms per cubic meter.

环保署给pm2.5设置的浓度限值为平均浓度12μg/m3。

I hope you also supplement with vitamin D, 400 IU or 10 micrograms.

- 我希望你也补充维生素 D，400 IU 或 10 微克。

For every microgram of pollution, PM2.5, there is an increase of the fatality rate of nine percent.

微克污染 PM2. 5，致死率就会增加 9%。

The Environmental Protection Agency says that the average person eats between 0.07 to 1.1 micrograms of uranium per day.

环境保护署表示，普通人天摄入 0. 07 至 1. 1 微克铀。

The World Health Organization (WHO) has said cities should have a maximum measurement of just 5 micrograms of PM2.5 per cubic meter.

世界卫生组织表示，城市PM2.5的最高测量值应控制在5微克/立方米。

But latrotoxin, the venom produced by the Black Widow spider, will kill you even quicker in amounts as small as just 267 micrograms.

但黑寡妇蜘蛛产生的蛛毒素，即使只有 267 微克，也能更快地至你于死地。