The baby gibbon is the second successful gibbon birth at the zoo.

这只长臂猿宝宝是动物园里第二只成功出生的长臂猿。

There should be one birth every nine seconds and one death every 9.5 seconds.

每9秒应该会有一个人出生，每9.5秒应该会有一个人死亡。

The average lapse between first and second births in South Africa is almost four years.

在南非，第一和第二胎之间的年份一般为四年。

The agency also said there will be 4.3 births and two deaths around the world every second in 2024.

该机构还表示，到2024年，全球每秒钟将会有4.3人出生，2人死亡。