第11单元 词汇表（按文中出现的顺序）
| meanings | 多重含义 |
| safe interconnection | 安全互联 |
| route locking | 进路锁闭；线路锁闭 |
| flank protection | 侧冲防护 |
| interlocked route | 联锁进路 |
| requirements | 必要条件 |
| train route | 列车进路 |
| shunt route | 调车进路 |
| not in effect | 无效 |
| inadmissible | 未被允许的 |
| converging tracks | 汇合轨道 |
| ancient | 古老的 |
| entrance signal | 入口信号机 |
| exit signal | 出口信号机；出站信号 |
| destination signal | 目的地信号机 |
| successive | 连续不断的 |
| tile exit | 出口指示 |
| lead into | 导向；通向 |
| written instructions | 文字指示 |
| verbal instructions | 口头指示 |
| confused with | 与···混淆 |
| essential | 基本的；本质的 |
| associated with | 与···相关 |
| instead of | 而不是 |
| belong to | 属于 |
| as if | 好像 |