Summary
The bees number is declining at an alarming rate. This influences the staple food pollination and fertilization, consequently affecting humanity's food security where everyone is getting enough affordable, nutritious food.
One third of the food we eat depend on insects to pollinate crops, fruits, and vegetables.
What is pollination?
Pollen is moved from the male part of a flower to the female part of a flower by insects or wind or humans.
What is fertilization?
pollen carried from another plant fertilizes the female ovule to make new seeds.
To supplement bee pollination, some inventors thought of spreading pollen with drones because sometimes bees don't get out of hives to work and they only work at daytime.
蜜蜂的数量正在急剧下降。这样会影响人类的，因为人类三分之一的食物依靠昆虫来传播花粉。
什么是授粉和授精呢？
授粉就是花粉从花药（雄蕊的重要组成部分）转移到柱头（位于雌蕊的顶端，是接受花粉的部位）的过程。
授粉有的可以靠风，有的要靠昆虫。
授精就是花粉被授给胚珠，这样才能结籽和果实。
由于蜜蜂数量正在下降，而且蜜蜂在极端天气下，如下雨刮风时无法工作，所以现在有发明，用直升机来传播花粉。
Vocabulary
bee's knee: an excellent or ideally suitable person or thing 顶尖儿; 最适合的人或物
think back to 回想至
extinction 灭绝
Flowers contain both male and female parts inside.
reproduce 繁殖
orchid 果园
听力原文链接 Source Link
https://dict.eudic.net/webting/Play?id=da1cc3de-f7d8-11ea-92ae-00505686c5e6&order=0
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