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果实外形也有明显不同。蜡梅果实是坛状或倒卵状椭圆形，种子藏在果实里，果实剥开后，内部种子乍看之下像红豆。而梅花的果实是近球形，有缝合线，被柔毛。
"It felt like one of those special sites that you do get every so often," he said.
除夕晚上，我的狗突然开始一阵阵嚎叫，简直像荒野里的狼。这是它此前从未发出过的声音，惊愕之余，我连忙查询狗为何会嚎叫。AI告诉我，常见原因之一，便是与主人分离后，产生了焦虑，有一种“别丢下我，我害怕”的感情。
In his Matching Soulmates paper in the journal of Public Economic Theory, everyone is in a computer simulated dating pool, where thousands of digitally created daters rank each other. His algorithm picks "first‑order soulmates": pairs who choose each other in a stable matching. It removes them, and runs it again with those left, and you get second‑order soulmates, and so on.