孩子可能会养成一种期望，即无论他们做了什么事情，都必须得到表扬。
It can also become an expectation that anything they do must be rewarded with praise.
他是一位研究如何减少垃圾的环境科学家，其中包括研究减少垃圾车行驶时掉下来的东西，当你考虑到这一点，自然就能明白他为什么会养成这种奇怪的习惯了。
His strange habit makes sense when you consider that he's an environmental scientist who studies how to reduce litter, including things that fall off garbage trucks as they drive down the road.
如果你不注意的话，你可能会养成这种习惯。
And if you're not careful, you might get into the habit of doing it all the time.
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