Ireland became so dependent on it that thousands of Irish people starved when the crop failed during the "Potato Famine" of 1845--1846, and thousands more were forced to emigrate to America.

【参考答案】

爱尔兰人的生活非常依赖土豆，以至于在1845年到1846年由于土豆歉收而造成的饥荒中有成千上万的人挨饿，还有成千上万的人......

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