I awoke to find myself at the bottom of a pit without any known means of scaling its sheer sides.
我一觉醒来发现我自己在一大坑里，不知道怎么样才能爬上陡壁。
The problem of scaling in oilfield injection process is common. It can occur in the bottom and every part of the shaft.
结垢是油田注水生产过程中普遍存在的问题，可以发生在地层和井筒的各个部位。
The problem of scaling in oilfield injection process is common. It can occur in the bottom and every part of the shaft.
结垢是油田注水生产过程中普遍存在的问题，可以发生在地层和井筒的各个部位。
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