syndrome of channel hit by wind

例句：

1. 1. The river is anatural channel for fish to swim in.
   这条河是鱼类游泳的自然通道。
2. 2. The companyuses a variety of channels to reach itscustomers.
   该公司使用多种渠道来接触其客户。
3. 3. The new pipeline will help reduce therisk of oil spills.
   新的输油管道将有助于减少石油泄漏的风险。