Now, 21 billion hours, it's a lot of time. 现在看起来，两百一十亿个小时是很多时间。 It's so much time, in fact, that the number one unsolicited comment that I have heard from people all over the world 真的是很多时间。事实上，我看到的最多的
噪音对我们的影响远远大于听力受损，除了损害听力外，还会影响睡眠、增加得心血管疾病的几率、改变血管架构......面对无处不在的噪音，我们应该如何应对？ Why noise is bad for your health - and what you can do about it? 为什么噪音对健康有害 你该如何应对噪音？ Do you hear that?Do you know what that
Once upon a time, at the age of 24, I was a student at St. John's Medical College in Bangalore. 很久以前，当我还是24岁之时，我尚是一名位于班加罗尔的圣约翰医学院的学生。 I was a guest student during one month of a public health course.
Here at ZBB, you’re building batteries to store electricity from solar cells（太阳能电池） and wind turbines. And you’ve been able to export batteries around the globe, and that’s helping l
