For the past five years, authorities have been strengthening their efforts to regulate them.

在过去5年，政府一直在努力管理他们。

The math teacher was holding a mid-year test.

数学老师在举行年考试。

The vaccine will be available in the market from around mid next year.

该疫苗将于明年年上市。

It is supposed to carry on until mid-2014.

这一运动预计持续到2014年年。

And the cost has come down 10 percent per year for 30 years.

30年，成本每年降低10%。

They have 50 million babies in 15 years.

15年有五万婴儿出生。

That is faster than any year of the last 10.

这比过去10年任何一年都要快。

Overall power prices are roughly twice what they were in mid-2021.

电价总体来说大约是2021年年。

The world's changed a lot since then.

这70年，世界发生了巨大变化。

The Dow falling over 1 percent, 12 year lows.

道琼斯指数下跌1%，是过去12年最低。

And that 46 years, I thought that was pretty remarkable.”

在46年，那次一定是非常不寻常。”

By the middle of the year, COVID cases in the country were quickly rising.

到那一年年，该国新冠确诊病例迅速上升。

In the past 15 years the world's population has more than doubled.

在过去15年，世界人口增加了一多。

The Nuevo sol has also been a relatively stable currency over the past 10 years.

在过去10年，新索尔也是一种相对稳定货币。

The group aims to have sequences from 350 people by the middle of next year.

该组组织目标是到明年年有350人进行测序。

And I mean, how he has developed over the past 20 years is extraordinary.

他在过去20年发展变化是非同寻常。

Pope Benedict is the first Pope in nearly 600 years to resign.

本笃十六世是在近600年第一位辞职教皇。

Revenue at Alphabet, Google's parent company, grew at the slowest pace since mid-2020.

谷歌母公司Alphabet营收增速是2020年年以来最慢。

This sample from a ponderosa pine, where each of these years represents a fire.

这个样本来自黄松，这些年每一年都代表一场火灾。

That might not have improved much in the last 50 years.

在过去 50 年，这方面改善可能不大。