您要查找的是不是：
- 通道channel
- 地下通道underground passage
- 安全通道exit passageway
- 多通道multicenter
- 消防通道fire passage
- E1级E1 grade
- E1区E1 region
- 绿色通道green channel
- 双通道twin channel
- 快速通道fast track
- 疏散通道exit passageway
- E1通道E1 channel
- 单通道single channel
- 工人们正在坚石中挖掘一条通道。The workers were tunnelling through solid rock.
- 我们不得不侧身穿过这狭窄的通道。We had to get through the narrow opening sideways.
- 传输通道transport channel
- 人行通道pedestrian passageway
- Ｄ类通道class D channel
- 三通道triple channel
- 离子通道ion channel
