VOA慢速英语:The World at 7 Billion, and Growing

短语讲解：

1. At the same time, low fertility rates in Japan and many European nations have raised concerns about labor shortages.

at the same time然而; 同时
例句：He may be very rude sometimes but at the same time he is very kind.
有时候他可能很粗鲁,然而他还是很善良。

2. They predict nine billion by twenty-fifty and ten billion by the end of the century.

by the end of到…为止
例句：He had finished his great works by the end of 1980.
到1980年底, 他已完成了他的巨著。

3. But India is expected to pass China and reach one and a half billion people around twenty twenty-five.

be expected to预计
例句：A big hurricane is expected to hit this weekend.
本周末将有一场猛烈的飓风袭来。

4. Sarah Crowe at the United Nations Children's Fund in New Delhi says these two problems "could keep India back."

keep back阻止…前进; 阻止…的进展
例句：I would have been here sooner, but the rain kept me back.
我被雨所阻, 否则早已经到了。

5. That child is unable to really grow to its ability and will remain in a state of stunting and not be able to learn when it goes to school -- when he or she goes to school, and indeed later earn and really pay back and pay into the economic and help the country and the region move forward.

pay back偿还
例句：I am sure that he will pay back every cent he owes you.
我敢肯定他会分文不差地把欠款还给你。
pay into把钱〔支票〕存入银行
例句：Please pay this sum into my wife's account.
请把这笔钱存入我太太的账户。

6. I think the bottom line of the story is that the public policy needs to become really, really serious about gender equality and about access to services -- to combat malnutrition, and to provide for access to health services, water, sanitation, schooling.

bottom line基本意思(或情况),概要; 结果
例句：The corporation's bottom line is a good profit margin.
公司的基本要求是好的利润。