Modern life makes us tired, right? But research from societies in Africa and South America suggests people in the ancient world slept only 6.5 hours a night.

😱 Nature’s jaw drop moment! 🐟⚡ This cormorant just gulped down a fish almost as big as itself—no chewing, no hesitation, just GONE! 🦅💥 The wild is savage and amazing!

为探究 6 - 24 月龄婴幼儿 caregivers 喂养行为与喂养结果的相关性及影响因素，研究人员开展了一项横断面研究。结果显示，喂养困难和身材矮小患病率较高，ICFI 与体重不足率、RFB 与喂养困难率呈负相关。该研究为改善婴幼儿喂养提供了重要依据。

在胸部CT横断面中见结节阴影或楔形阴影，并可见一条清晰的血管影进入结节或楔形阴影内（图1）。此征象在高分辨CT扫描时显示更加清楚。实际上，动脉血管并没有真正穿行结节内，而是围绕结节走行。真正穿行其间的是肺静脉。供血血管征不同于血管造影中的肿瘤血管。