After winning his own freedom from slavery, Henson secretly helped hundreds of other slaves to escape north to Canada — and liberty.

亨森自己摆脱了黑奴身份获得自由之后，便秘密帮助其他许多黑奴逃奔北方去加拿大——逃奔自由之地。

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In 2009, Safiya managed to escape after disguising herself as an old woman then secretly flew to France.

2009年，Safiya将自己伪装成一个老女人，设法逃离了那里，接着她秘密搭机飞往了法国。

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That was not a real railroad. It was an organization of people who secretly helped slaves escape to the North.

VOA: special.2009.04.16