She-bears normally give birth to tiny walnut-sized cubs during their winter hibernation and suckle them for months as they grow, before the spring thaw awakens the mother and she leaves her den.
The Thymus gland: This is a small walnutsized gland which lies behind the breast bone.
胸腺：胸腺是一种像小核桃大小的腺体，分布于胸骨后侧。
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Two-story high ceilings in both library and living room with all walnut built-in bookcases; all ceilings thru-out the entire home with unique details, all bedrooms are generously sized suites.