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The caisson would fill with oil from the leak .

沉箱将装满泄露处的原油。

It also has the caisson for emergency cases .

同样有沉箱以备紧急情况之需。

In emergency case it could be closed with caisson with the weight of 150 tons .

在紧急情况下，可以用150吨重的沉箱将其关住。

A containment assembly would then be attached to the top of the caisson to send the oil elsewhere .

接着堵漏装配被接到沉箱顶部，把泄露的原油送往别处。

Once the caisson was in position , the pile would be pumped out and driven into the ooze .

沉箱一旦就位，就要把桩抽出来并打入软泥中。