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Climb mountains along the designated route. For your safety, do not enter undeveloped areas in the park, or use mobile phone in stormy weather.

请按指定路线登山游览，为了你的安全，请勿进入景区未开发区域，雷雨天气请勿使用手机。

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Land that is not previously developed and landscapes altered by current or historical clearing or filling, agricultural or forestry use, or preserved natural area use are considered undeveloped land.

先前未开发的土地，以及被当前或历史上的清理或填埋、农业或林业用途改变的景观，或者保留的天然区域均被视为未开发的土地。

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Parents should strive to be a role model: get involved in their community, find a job, follow a passion, or explore an undeveloped talent.

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The negative impact is greater for those with undeveloped or impaired cognitive control, such as children and older adults, and is exacerbated by the presence of neurological or psychiatric conditions like ADHD or Alzheimer's disease.

CNN: How mobile tech can influence our brain

If you were to drive west out of Baton Rouge to Lafayette and Lake Charles, you will see that most of the land south of I-10 is some form of undeveloped wetland or swamp.

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