我们的行李一直被托运到最终目的地。
Our luggage was checked all the way through to our final destination.
很长一段时间这个问题一直被掩盖着。
For a long time this problem has been swept under the carpet.
他一直被有可疑商业行为的传言困扰着。
He has been dogged by allegations of questionable business practices.
The way we're going to model differentiated products is to imagine, just to take a simple example, imagine a city and this city has one long straight road through it.
我们建立差异产品模型的方法,想象一下,举个简单的例子,想象一个被一条直路贯穿的城市
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