An improved oxidation ditch process using forced air supply low-pressure jet aeration system was used to treat middle-stage wastewater from pulping and papermaking.

采用供气式低压射流曝气系统改良型氧化沟工艺处理制浆造纸中段废水，对整个调试运行过程进行了介绍。

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It isn't clear if the crew on board the Lion Air plane intended to ditch the aircraft or somehow missed the runway.

WSJ: Weather Scrutinized as Possible Cause of Lion Air Crash

Down the road a hundred meters or so, Six-Seven's vehicle commander and air guards had dismounted and were standing around in the ditch.

NPR: 'Operation Homecoming': The Writings of War

Dug in 1940 as London was blitzed by German bombers, the tunnels were designed as a air-raid shelter for up to 8, 000 people, and as a possible last-ditch base for the government in the event of an invasion.

ECONOMIST: Snooker, piranhas and a hotline to Moscow