By the mid-1500s, coffee bushes were being cultivated in the Yemen and for the next hundred years this region produced most of the coffee drunk in Africa and the Arab world.

到16世纪中期，咖啡树已经在也门得到了种植，在此后几百年里，这个地区生产了非洲和阿伯饮用的最多的咖啡。

This is the branch of an arabica coffee tree grown here in Bali.

这是生长在巴厘岛的阿咖啡树的树枝。

But they're under threat because of climate change.

但气候变化正威胁着这咖啡树的存活。

When the berries are ripe, they are found to contain two seeds.

当果实成熟的时候，咖啡树长成了两种种子。

It's early March, and the plants here should not bloom for weeks, Bogantes Vargas says.

现在才三月初，这咖啡树原本应该几周后再开花的，博甘蒂·瓦格说。

But it takes a lot of plants to produce the world's coffee supply each year.

但每年需要大量的咖啡树才能满足全世界的咖啡需求。

They found that the species appeared around 600,000 years ago.

他们发现，阿咖啡树出现于大约60万年前。

The kitchen smells like freshly-brewed coffee, made from beans of the Coffea plant, and you grab some avocado toast — a combo of wheat grown to be pest-resistant, spread with the insides of a big, green, buttery berry.

厨房里弥漫着用咖啡树的豆子煮成的新鲜咖啡的味道，你拿起一果吐司——一种抗虫小麦的混合物，涂上绿色的“大黄浆果”。

A tree is never without leaves, which are at small distances from one another, and on almost opposite sides of a bough.

树都要有叶子，咖啡树的每片叶子之间距离很小，分布在树枝两侧。

These ants live in trees grown alongside coffee bushes to provide shade-for coffee bushes do not thrive in direct sunlight.

这蚂蚁住在树上，而这树和咖啡灌木共同生长并为它们提供树荫，因为在阳光直射的地方咖啡灌木无法茁壮成长。

It is, as far as I know, the only one of its kind growing in our county.

据我所知，在我们这个县，这种咖啡树还只有我们这一棵。

The arabica plant's population changed over thousands of years before humans began growing it.

在人类开始种植阿咖啡树之前的数千年里，阿咖啡的种群发生了变化。

Newbold, from the University College of London, said he sees a " double hit of climate change" affecting the coffee plants themselves, as well as the pollinators they depend on.

来自伦敦大学学院的纽博尔德说，他认为气候变化对咖啡树本身以及它们所依赖的授粉者都有影响。

It was planted in the Botanical Gardens at Amsterdam, and in a few years seeds taken from it were sent to South America

人们将咖啡树种植在了阿姆特丹的植物园里，又过了年，它的种子被带到了南美洲。

Rising temperatures will bring drought, increase the range of diseases and kill large swaths of the insects that pollinate coffee plants.

气温上升将会引发干旱，扩大疾病范围，杀死大量为咖啡树授粉的昆虫。

Other studies have shown shrinking numbers of pollinators, with coffee and cocoa plants especially harmed by the absence.

其他研究表明，授粉者的数量正在减少，咖啡树和可可树因缺乏授粉者而受到的损害尤其严重。

In fact, Ethiopia is where the coffee plant originated.

事实上，埃塞俄亚是咖啡树的发源地。

It's coffee. This is a coffee plant.

是咖啡。这是一株咖啡树。

The model shows problems for coffee plants for the rest of this century.

该模型显示了本世纪余下时间咖啡树的问题。

However, the beverage remains expensive, as Mocha carefully protects its monopoly by prohibiting the sale of plants or cherries, in order to prevent the cultivation of coffee plants elsewhere in the world.

然而， 这种饮品依然昂贵，因为摩精心维护其垄断地位， 禁止出售咖啡树或咖啡豆，以防止咖啡树在其他地方种植。