Give him something to chew on, such as a teething ring or a wet washcloth cooled in the refrigerator. He may also get some relief from eating cold foods, like applesauce or yogurt.

给点东西让他啃咬，比如一个橡皮环或者一条放冰箱里冻过的湿毛巾。

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An O-ring seals the relief valve body to the main housing.

用一个O形环密封安全阀阀体与主外壳。

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Remove the pressed in relief valve seat and seat O-ring.

拆卸压进去的安全阀阀座和阀座o形环。

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Its chimes ring out in the late afternoon sunshine, throwing into sharp relief the way that innocence and evil lived here, side by side.

BBC: Cleveland's Seymour Avenue: Scene of a terrible crime