出于效率原因，在得到修剪区的起始和终止位置之前避免拷贝字符串的任何部分。

For efficiency reasons, copying any part of the string is avoided until the trimmed version's start and end positions are known.

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按下“开启”或“闭合”按纽，幕体到达行程终止位置时，行程终止开关将被激活时，大幕机停止运行。

Press "Open" or "Close" button, while reaching stop position, stop switch will be activated and the proscenium curtain machine will stop running.

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例如，无人机协同侦察和攻击有时需要到达要求的终止位置同时具有正确的机头指向，并且保证花费的时间最小。

For example, UAV integrated reconnaissance and attack functions sometimes need to arrive at its terminal position with right heading angles and cost the minimum time.

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