There are over 60,000 bees in the average bee colony. A honey bee can fly up to 8km per hour, beating its wings approximately 200 times per second. 一个蜜蜂群体里通常有六万多只蜜蜂。 一只蜜蜂每小时可以飞行八公里左右 ；每秒钟摆动翅膀约两百多次。

People dressed as bees protest in London against the use of pesticides. Photo: Dan Kitwood/ Getty Images If you have a bee in your bonnet about something, you are obsessed with it and can't stop ...

Our three idioms this week are: Sorry, you can't see the video but you can still download it from the link on this page. To see the video in the page you need to ...