South Korea offers a special visa to foreign technology workers that allows them to enter and leave the country freely for three years.

韩国签证提供了一个特殊的外国技术工人，使他们能够进入和离开该国三年自由。

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New air routes and added flight frequencies and easier visa procedures to South Korea have once again pushed up the number of visitors to the country.

此外，新航线、航班频率提高以及签证手续简化使得赴韩国旅游人数大增。

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Some participants may need a VISA for entering into Korea or for stopover countries.

一些参加者可能需要为进入韩国签证或者中途停留国家。

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After Sun graduated from college, she had to move back to Korea because her student visa had expired.

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Two State Department officials, speaking on condition of anonymity because they were not authorized to release details, told CNN in April that Jun was a Korean-American businessman who had a visa to enter North Korea.

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