| signal | |
| 级别 | 第4级 |
| 音标 | [ ˈsɪgnəl ] |
| 解释 | n.信号，暗号 |
| 英英释义 | an action , movement or sound which gives information , a message , a warning or an order |
| 发音 |  |
| 例句 |
1. This is a signal failure. 这是明显的失败。 2. A train must not pass a signal that is at danger. 火车切不可越过危险信号。 |
