有些用户可能会在单个会话中向购物车添加若干个项，但这不会扭曲模型。
It's possible that some users might add several items to a shopping cart in a single session but that does not skew the model.
他的模型集中在黑洞扭曲时间和空间的方式上。
His model focuses on the way that black holes warp space and time.
基于复杂模型的回报毋容置疑是被扭曲了：巨大的额外收入多于巨大损失。
And returns based on the deluxe model had a positive skew: large windfalls were more likely than big losses.
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