This is 40 times the safe working limit.

这是安全工作上限的四十倍。

The city on Thursday recorded a concentration of PM2.5 particles at 14 times over the World Health Organization safe limit.

周四，新德里PM2.5浓度是世界卫生组织安全限值的14倍。

Additionally, parents need to communicate with their children and establish boundaries that allow them to explore within safe limits.

此外，父母需要与孩子沟通并建立界限， 让他们能够在安全范围内探索。

However, experts say that the pollutants in Delhi's air in winter months can reach up to three times the safe limits on some days.

然而，专家表示，冬季德里空气中的污染物有时会达到安全限值的三倍。

If we're going to have a fighting chance of staying below 1.5 degrees, that " safe limit, " we have to have carbon removals, and it looks like we're going to need a lot.

如果我们要有机会保持在 1. 5 度以下，即“安全极限” ，我们就必须去除碳， 看起来我们需要很多东西。

A study of 7,000 people in their early 20s, 40s and 60s found that those who drank within safe limits had better verbal skills, memory and speed of thinking than those at the extremes of the drinking spectrum.

7000名年龄分别为20多岁、40多岁和60多岁的成年人参与了一项研究，研究发现，适度喝酒的人具有更强的语言能力、记忆力以及思维能力，而那些禁酒者和经常纵酒过度者则相对较差。

The Paris Agreement resolved to hold the increase in global temperatures well below 2 degrees Celsius, or 3.6 degrees Fahrenheit; last year, a United Nations-backed panel of scientists said the safer limit was to keep it to 1.5 degrees Celsius.

《巴黎协定》决心将全球气温上升幅度控制在远低于2℃，或3.6℉的范围内；去年，联合国支持的某科学家小组表示，更安全的上限应该是1.5℃。