A willingness to mate is a relatively straightforward message.
交配意愿 算是相当直接了当的讯息
But primates are capable of much more complex communication.
但是灵长类 还能进行更复杂的沟通
It starts between a mother and her baby.
故事要从一对母女开始说起
The rainforests of Sumatra.
这里是苏门答腊的雨林
This female orang-utan is forty-two years old.
这只母红毛猩猩四十二岁了
Her third child, a six year old daughter,
它的第三胎,六岁的女儿
is still with her.
还跟在它身边
Orangs look after their children for longer than any other primate...
红毛猩猩照顾下一代的时间
except ourselves.
在灵长类中仅次于人类
It will take her nine years to teach her youngster
它要花九年时间传授下一代
everything she needs to know about this complex tree-top world.
一切有关 这个复杂树梢世界的知识
She must learn how to collect ants and termites.
小红毛猩猩要学习 如何捉蚂蚁和白蚁
How to identify at least 200 kinds of edible plants...
如何辨识至少两百种 可以吃的植物
and how to avoid the poisonous ones.
及避免误食有毒植物
And how to judge when fruit, like this durian, has ripened to perfection.
如何辨别如这颗榴莲等的果实 熟得恰到好处可以吃了