The pit is being shut down because it no longer has enough coal that can be mined economically.

那个煤矿要关闭了，因为储量不足，难以经济开采。

《柯林斯英汉双解大词典》

Avocados are delicious and highly nutritious fruits and can be used in myriad ways, but what to do with the pit?

油梨很美味，它是含有丰富营养水果，可以被用在许许多多方面，但是剩下的核怎么办呢？

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Pit a human being against a predator whose jaws, claws and brute strength can kill in an instant, and the outcome is going to be bad for the human.

一个人面对猛兽的血盆大口、尖牙利爪和可以瞬间致死的兽性力量，对人来说结果是糟糕的。

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But CME Group is not going to be the one to come up with the cash so traders can get back in the pit or on the screen.

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Until they can develop a strong enough battery, a process he predicts will take three to five years, Formula E drivers will simply switch cars during pit stops so the depleted battery can be recharged.

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At any organized pit fight in which two dogs are really going at each other wholeheartedly, one can observe the owner of each dog changing his position at pit-side in order to be in sight of his dog at all times.

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