这一周婴儿的脊柱更加清晰，形成了33块脊椎、150个关节和1000个韧带。
This week your baby's spinal column is becoming more distinct forming 33 vertebrae 150 joints and 1 000 ligaments.
这一周婴儿的脊柱更加清晰，形成了33块脊椎、150个关节和1000个韧带。
This week your baby's spinal column is becoming more distinct, forming 33 vertebrae, 150 joints and 1, 000 ligaments.
它们的喉咙具有富有弹性的韧带，使其无论猎物多大均可整个吞下，在一顿大餐之后，它们可以数周甚至数月不进食。
Jaws attached by stretchy ligaments allow them to swallow their prey whole, no matter the size, and they can go weeks or months without food after a big meal.
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