1.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的平均浓度为每立方米28。

2.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每千含有9.5毫汞。

3.The concentrations of 70 micrograms per liter.

浓度为每升70。

4.Those cities both measured at over 92 micrograms.

这两个城市的PM2.5浓度都超过了92/立方米。

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

相比之下，美国每的预算足以制造出几的反物质。

6.One microgram is the lethal dose for a human being.

需百万分之一公的钸，就足以致命。

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

细颗粒物（PM2.5）平均浓度为 30 /立方米，同比下降 9.1%。

8.The WHO recommends a reading of no more than five micrograms.

世界卫生组织建议读数不超过5。

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

中国和田市位居第二，PM2.5浓度为94.3/立方米。

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

仅仅很小的量（小于一）就足以杀死一个健康成人。

11.In India, New Delhi's measurement of 92.7 micrograms made it the most-polluted capital city.

在印度，新德里的PM2.5浓度是92.7/立方米，这使其成为污染最严重的首都城市。

12.That compared with a 3 percent increased risk for every 3 microgram increase in non-wildfire particles.

相比之下，以非野火烟雾释放方式，颗粒物每增加3，被诊断患有痴呆症的风险就会增加3%。

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

仅 124 就可以致人死亡，也就相当于人类两根睫毛的重量。

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

本周韩国的一个地区创下了超过1000的记录。

15.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，北京的 PM2.5 平均浓度为每立方米 33 。

16.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。

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

在 1 至 5 期间，北京的 PM2.5 平均浓度为每立方米 33 。

18.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。

19.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 。机翻

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

每污染 PM2. 5，致死率就会增加 9%。机翻