站在超市的走道上，我们没有办法辨别罐头膨胀是由于氢气还是二氧化碳，但也没关系。 假如食品已经变质，告诉商店的经理，然后选择一罐好的就可以了。

Standing in the supermarket aisle, there’s no way you can tell whether a can is swollen because of hydrogen or carbon dioxide gas, but that shouldn’t really matter.

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然而，尽管我们定义了root和addTask屏幕，但没有办法从一个屏幕跳转到另一个。

However, while we defined a root and addTask screen, there is no way to get from one to the other.

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我们收到信的时候你已经离开台北了，而且我们没有办法联络上你。

But by the time we got it, you had already left Taibei, and there was no way we could get in touch with you.

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