英[\'laɪkə]
美[\'laɪkə]
Laika orbited Earth for seven days.
它跟随史泼尼克2号绕地球运行了7天.
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Scientists officially announced that Laika died because of a malfunction in the thermal control system.
科学家正式宣布莱卡的死因是热控系统发生故障.
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