That's because twins often share vital organs, like a heart or brain.
这是因为双胞胎通常共享重要的器官,比如心脏或大脑。
And on Valentine's Day, we all want to have that someone special to share a box of heart-shaped candy - or should that be brain-shaped candy instead?
而在情人节时,我们都希望和某个特别的人一起分享一盒心形糖果——或者应该是脑形糖果才对?
They have disturbed sleep if they share a bed, but tend to get better quality rest when they do drop off and their brain power remains undiminished.
与人同床她们会睡不安稳,可一旦入睡就能获得较高的睡眠质量,脑力也不会受到损伤。
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