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这项繁殖计划需要一些雌海豹。
Female seals are needed for the breeding programme.
youdao
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许多雌海豹为了寻找冰块而将生产时间推迟了长达两周。
Many female harp seals delayed giving birth for up to two weeks as they searched for ice.
youdao
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许多雌海豹为了寻找冰块而将生产时间推迟了长达两周。
Many female harp seals delayed giving birth for up to two weeks as they searched for ice.
youdao