vt.变换符号
n.变换符号
Reindex propeller shaft 180° and evaluate. 将传动轴翻转180°，并测试。
For safe sake, please reindex every mail folder before you logout! 为保险起见
Because the reindex process may be time consuming, consider the cost-benefit of supplementary character support. 由于重新索引的过程可能很耗时,所以应考虑增补字符支持的成本收益。
