L4-U3-P3- Listening
Honeybees play an interesting and important role in nature
蜜蜂在自然界中扮演着有趣而重要的角色。
In addition to making honey , honeybees help many plants reproduce
除了制造蜂蜜，蜜蜂还有助于许多植物繁殖。
They do this by pollinating the plant which means to transfer pollen
他们通过给植物授粉来实现这一目的，也就是传递花粉。
Pollination occurs when pollen is moved within a plants flower or carried to another flower
授粉发生在花粉在植物花内移动或传到另一朵花上时。
This is how the plants reproduce
这就是植物繁殖的方式
For reproduction to succeed , the pollen must be transferred from the male part ot a flower to the female part
为了繁殖成功，花粉必须从花的雄性部分转移到雌性部分。
当花粉在植物花朵内移动或被带到另一朵花中时，就发生了授粉
Many plants depend on pollination for reproduction
许多植物靠授粉繁殖
These include many fruits and vegetables
这些包括许多水果和蔬菜
Besides honeybees , there are many other pollinators , including birds , insects , and other kinds of bees
除了蜜蜂，还有许多其他传粉者，包括鸟类、昆虫和其他种类的蜜蜂
Without enough pollinators , many of our favorite fruits and vegetables would become more expensive and hard to find
没有足够的传粉者，许多我们喜爱的水果和蔬菜将变得更加昂贵和难以找到
These include almonds and cherries
这些包括杏仁和樱桃
Honeybees are important pollinators and play an important role in agriculture
蜜蜂是重要的授粉者，在农业中起着重要的作用。
Beekeepers are people who keep honeybees
养蜂人就是养蜜蜂的人
In addition to collecting honey , some beekeepers provide pollination services to farmers
除了采集蜂蜜，一些养蜂人还为农民提供授粉服务
They do this by raising and managing colonies of bees
他们通过饲养和管理蜂群来做到这一点。
Farmers need the colonies to pollinate their crops
农民需要蜂群为他们的作物授粉。
Beekeepers can provide and manage bee colonies for farmers
养蜂人可以为农民提供和管理蜂群。
Honey bees are social insects that live in colonies
蜜蜂是群居的群居昆虫
A bee colony consists of a queen bee male drones and thousands of female worker bees
蜂群由蜂王雄蜂和数千只雌性工蜂组成。
Each colony also contains eggs and immature bees in various stages of development
每个蜂群还包含处于不同发育阶段的卵和未成熟蜜蜂。
The number of bees within a colony pends on seasonal changes
蜂群中的蜜蜂数量取决于季节变化。
A colony's population increases during the warm seasons and decreases during colder seasons
群落的数量在温暖季节增加，在寒冷季节减少。
In recent years , many bee colonies have collapsed or disappeared
近年来，许多蜂群已经崩溃或消失
A bee colony collapse occurs when a majority of the bees in a colony disappear and leave behind the queen
当蜂群中的大多数蜜蜂消失并离开蜂王后，蜂群就会崩溃。
Some beekeepers have reported losing 30 to 90 percent of their colonies
一些养蜂人报告说他们失去了30%到90%的蜂群。
This loss of bee colonies can cause significant problems for farmers who depend on them to pollinate their crops
蜂群的消失会给依靠它们为作物授粉的农民带来严重的问题
In some parts of the world , a shortage of bees has increased the cost of renting bees by up to 20%
在世界上的一些地方，蜜蜂短缺使租用蜜蜂的成本增加了20%。
There are several possible causes for bee colony collapse
蜂群崩溃有几种可能的原因
One possible cause is the use of new pesticides
一个可能的原因是使用新的杀虫剂
Other possible causes include infections from viruses , genetic factors , and malnutrition
其他可能的原因包括病毒感染、遗传因素和营养不良。
Changing weather patterns may also play a role as summers get hotter and winters get colder
随着夏季越来越热，冬季越来越冷，天气模式的变化也可能起到一定的作用。
These changes in weather may weaken the bees , making it more difficult for them to fight infections
这些天气变化可能会削弱蜜蜂的抵抗力，使它们更难抵抗感染
Whatever the cause of colony collapse , it's important to understand that many parts of our world are interdependent
不管蜂群崩溃的原因是什么，重要的是要理解我们世界的许多地方是相互依赖的
changes that affect one species may have serious effects on other species
影响一个物种的变化可能对其他物种产生严重影响。
A change to our environment can start a chain of events that is difficult to predict
环境的变化会引发一系列难以预测的事件。
any complex system such as the Earth's nvironment , small changes can have unforeseen consequences
任何复杂的系统，如地球的环境、微小的变化都会产生不可预见的后果。
The danger of unforeseen consequences is something we all need to understand better
我们都需要更好地理解不可预见后果的危险性。
测验的句子：
The Earth's environment is an extremely complex system
地球环境是一个极其复杂的系统
