Next time you go out jogging, why not carry a rubbish bag and collect some litter along the way?
下次你出去慢跑的时候，为什么不带个垃圾袋，沿途收集一些垃圾呢？
After all, if it's true that what goes around comes around, why not make sure that what's circulating around you is the good stuff?
毕竟，如果“善有善报，恶有恶报”是真的，那为什么不确保你周围的都是好的事情呢？
If you have enthusiasm for English, why not come and join our club?
如果你对英语有热情，快来加入我们俱乐部吧。
If you enjoy creating delicious dishes, why not attend our "Little Cook Training Program"?
如果你喜欢自创美食，为什么不加入我们的“小厨师培训计划”呢？
So why not cool down with a gelato?
为什么不来一份冰淇淋凉快一下呢？
So why not write each other love letters.
所以为什么不去尝试给对方写封情书呢？
Don't be afraid to ask why, and what if, and why not?
不要害怕去问为什么、如果怎样或者为什么不呢？
It's my hobby anyway, so why not make it my business?
那毕竟是我的兴趣所在，为什么不把它做成我的生意呢？
If you can't find a team to join, why not start your own?
如果你找不到可以加入的团队，为什么不自己创建一个？
So why not plan a vacation devoted exclusively to reading?
所以干嘛不找个假期专门来读些书呢？
If you've never tried trail running, why not give it a try?
如果你从没试过越野跑，为什么不试试呢？
Instead of throwing away the rubbish, why not recycle it?
与其把垃圾扔掉，为什么不重新利用呢？
Others have seen what is and asked why. I have seen what could be and asked why not.
别人看到已存在的事实，问为什么；我看到不存在的可能，问为什么不。
"And why not, mother?" asked Pearl, stopping short just at the beginning of her race.
“干嘛不戴呢，妈妈？”珠儿问道，她刚要拔腿朝前跑，忽地停下了脚步。
I hadn't thought of doing it before but someone asked me and the money goes to charity so why not?
本来我没想参赛，可有人让我去还说赞助金将捐给慈善机构，既然这样，何乐而不为呢？
Just as bad events can seem to have a domino effect, so can good things - so why not jump start some goodness in someone's life?
就像糟糕的事情似乎会有多米诺效应，好的事情也是一样——所以为什么不在别人的生活中开始一些好事呢？
Given all that, it seems you win this bet — but, in light of your friend's unemployed status, why not spring for the lobsters anyway?
这样看来，你要在这次打赌中胜出了——但是，考虑到你朋友目前处于失业状态，这顿龙虾大餐还是你来做东吧！
We spend a significant portion of our lives working, so why not do all we can to create a positive and enjoyable experience in the workplace?
我们生命中相当大一部分时间用于工作，因此何不尽我们所能，在工作场所中创造一种积极愉快的体验呢？
If you can afford it, why not pack your bags and set off on another experience - a "gap year" - to discover the world and learn about yourself in the process?
既然如此，若经济情况允许，何不背上行囊来开始另一种人生体验——“空档年”呢？在此过程中，你既能探索世界，又能更好地了解自我。
If you wanted to know which products to display in your shop window this Christmas, why not compare the volume of search interest in each product and discover the winner?
圣诞节要到了，如果你不知道把哪一种产品摆在商店橱窗里才合适，那为什么不比较一下人们的搜索兴趣，并从中找出最受欢迎的那一个呢？
Why not make one by ourselves?
为什么不自己做一个呢？
为什么不一起去游泳呢？
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