The utility model discloses a myopia-preventing device which is a tool for preventing the myopia of eyes.

防近视器是一种防止眼睛近视的器具。

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The utility model relates to a toppling preventing device for a bicycle, and is suitable for preventing a bicycle from toppling in the process of running.

一种自行车防倾倒装置，适于防止自行车行驶过程中倾倒。

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The backward-wind preventing device is arranged on the chimney exit of the coal stove, which can prevent the backward wind, and is composed of two components, a housing barrel and a seat sleeve.

该产品为安装在煤火炉的烟筒出口上，能防止倒风。它是由外罩筒和座套两个部件构成。

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Sources close to the investigation tell Forbes that Transocean engineers had last checked the blowout preventer 10 days before the rig explosion, and that BP believes the device suffered a leak of hydraulic pressure, preventing it from being able to shut the well.

FORBES: Fingers Crossed: Will BP's Box Stop Oil Spill?

But advocates for preventing nuclear proliferation say it highlights the risk that terrorists could obtain enough fuel to build a nuclear device.

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