The controller turns on the pump when the sewage tank is full and pumps the sewage into a force main.

控制阀在污水缸变满时启动泵，并把污水抽进压力总管道。

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Arthur Conan Doyle,creator of the fictional detective Sherlock Holmes, wrote about Poe's influence on other crime writers: "Each may find some little development of his own, but his main art must trace back to those admirable stories of Monsieur Dupin,so wonderful in their masterful force, their reticence,their quick dramatic point."

VOA: special.2009.02.02

In a matter of months, we will reach a milestone, when the Afghan forces will move into the lead across the country, while ISAF's (International Security Assistance Force) main effort will shift from combat to support.

BBC: UK combat operations in Afghanistan effectively cease

The unit served in the force's main operating base Price, in the Nahr-e Saraj district of Helmand Province.

BBC: Return home for Taunton-based 40 Commando

PRI, the other main force, will extract a high price for its backing.

ECONOMIST: Mexican politics