Mexico’s southern border stretches for 960km (600 miles), snaking through remote highlands and thick jungle. Patrolling it is hard.

墨西哥南方边界全长960公里，在遥远的高地和茂密的丛林里蜿蜒前进，巡逻任务非常艰难。

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Mexico's southern border stretches for 960km (600 miles), snaking through remote highlands and thick jungle. Patrolling it is hard.

墨西哥南方边界全长960公里，在遥远的高地和茂密的丛林里蜿蜒前进，巡逻任务非常艰难。

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Even reaching the border is hard.

仅仅是到达边境就很艰难。

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Chambers of commerce on both sides of the border are pushing hard for trade liberalisation.

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