These herbs are said to fence out influenza.

这些药草据说可预防流感.

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To grow vegetables in out backyard, we have to fence out the chickens.

在后院种菜, 我们必须树栅防鸡.

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To grow vegetables in our backyard, we have to fence out the dog.

要在后院种菜, 我们必须竖棚防狗.

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