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Stars are born when a cloud of material collapses.
当云团状物质塌缩的时候，恒星就诞生了。
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When stars form, they collapse from a cloud of gas and dust.
恒星的形成，由气体和尘埃云坍塌而来。
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When stars form, they collapse from a cloud of gas and dust.
恒星的形成，由气体和尘埃云坍塌而来。
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