这种在服务工具上优化后的双滑套开关工具配置有效的减少了作业时间，同时也降低了多次操作活动工具所产生的风险。

The dual shifter configuration optimizes the operation by reducing rig time, while also reducing the risk associated with excessive tool manipulation.

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如果没有分帧机制，一端接收到的数据可能比另外一端发送的数据多或少(这会将一次写操作划分成多次操作，或者将多次写操作合并到一个读操作中)。

Without framing, a peer may receive more or less than was sent (splitting up a write or aggregating multiple writes into a single read).

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当你忘记如何操作一个熟悉的物品，如微波炉，或是忘记如何开车到一个你之前就拜访过很多次的朋友家时，这可能就是出现问题的征兆。

Forgetting how to operate a familiar object like a microwave oven, or forgetting how to drive to the house of a friend you've visited many times before can also be signs of something going wrong.

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We saw some quadratic algorithms, typically those are things with multiple nested loops, or iterative or recursive calls, where you're doing, say, a linear amount of time but you're doing it a linear number of times and so it becomes quadratic, and you'll see other polynomial kinds of algorithms.

我们看过一些平方算法，他们一般进行了多次嵌套循环,或者递归迭代调用，对一个线性操作调用线性次,这样就变成平方次了,以后你们能看到,一些多项式算法。

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