1、
2、
3、
The switchback operation returns the ACTIVE RCSs to the ACTIVE state on their primary AP.
恢复切换操作将会使其主AP上的ACTIVERCS回复为ACTIVE状态.
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4、
Several hundred yards beyond the first switchback in the road, he came to the second bend.
过了公路上第一个急转弯几百码处，他又遇到了第二个急转弯。
《柯林斯高阶英汉双解学习词典》
