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Pick up BHA and run to seafloor.
拉起下部钻具并将其下到海底。
youdao
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When large quakes occur underwater, the seafloor may heave or sink.
如果大地震发生在水下,海底有的地方上抬,有的地方下沉。
youdao
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When large quakes occur underwater, the seafloor may heave or sink.
如果大地震发生在水下,海底有的地方上抬,有的地方下沉。
youdao