Conversely, if he goes on the hard pass and you defend the easy pass, he's going to lose one of those battalions.

相反,如果他选择崎岖之途,而你却防守平坦之路,那么他仅仅损失一个营的兵力

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If the invader chooses the hard pass he will lose one battalion of his army simply in getting over the mountains, simply in going through the hard pass.

如果侵略者选择崎岖的路,仅在穿越阿尔卑斯山的途中,他就要损失一个营的兵力,这就是选崎岖之路的代价

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And there's two you could use to attack through, easy or hard.

同样他也有两条路入侵途径,平坦之途和崎岖之途

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