原文标题：

White, brown, green chicken eggs: What's the difference?

白皮、褐皮、绿皮鸡蛋有什么区别？

每日英语：

1 have a bee in your bonnet

think or talk about sth all the time and believe that it is very important

痴迷；念念不忘；想得入了迷：

Harry's always going around opening windows. He's got a bee in his bonnet about fresh air.

哈里总是走来走去地开窗，他就惦记着新鲜空气。

2 been there, done that

used to show that you think a place or an activity is not very interesting or impressive because you have already experienced it

去过了；经历过了；没有新意：

Not camping again! Been there,done that, got the T-shirt.

不要再提野营了！都已经去过了，再去就没劲了。

3 have been a round

have a wide experience of life

生活阅历丰富：

She's been around a bit so she'll know how to deal with this type of problem.

她经验老到，应该知道如何应对这类问题。

4 make a beeline for sb/sth

move directly towards sb/sth

直奔某人/某物；抄近路：

The children made a beeline for the food the moment they came in.

孩子们一进来就直奔吃的东西。