但是幼鸽不进行飞越海峡的练习，而是进行四次内陆飞行练习后，喂给蛋白质丰富的混合料，将它们养大成熟。

The youngsters get no channel races but receive about four inland races and then are left to mature with plenty of protein in the mix.

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在家里，他在电子游戏上练习飞行。

At home, he practiced flying on a video game.

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他们全是了不起的鸟儿，每天无时无刻不在练习飞行，试验各种高级特技。

They were magnificent birds, all of them, and they spent hour after hour every day practicing flight, testing advanced aeronautics.

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