比如说，你可以登陆amazon查看你的订购历史，你也可以查看你在Netflix上面租了什么电影，或者是你在eBay上购买了什么东西。
For example, you can login to Amazon and see your order history, you can see what you rented on Netflix or what you bought on eBay.
这对夫妇很好奇这个印记是用来干什么的，所以在两人回家之后，丈夫拿出放大镜看看上面到底写的什么。
The couple was curious about what the stamp was for, so when they got home, the husband got out his magnifying glass to try to see what it was.
机械行业很多人不明白，为什么洗砂机对于在修路和建筑上面是如此重要呢，为什么砂石需要洗选呢？
In many people just don't understand why wash pressure-blasting machine for road and buildings above is so important? Why is it that sand need washing?
你应该有目的地建模，如果你不知道为什么你正在做某些东西，或者你不知道模型/文件实际需要什么观众，那么你不应该工作在它上面。
You should model with a purpose, if you don't know why you are working on something or you don't know what the audience of the model/document actually requires then you shouldn't be working on it.
你应该有目的地建模，如果你不知道为什么你正在做某些东西，或者你不知道模型/文件实际需要什么观众，那么你不应该工作在它上面。
You should model with a purpose, if you don't know why you are working on something or you don't know what the audience of the model/document actually requires then you shouldn't be working on it.
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