foot breadth 从胫侧跖骨点(mt.t)至腓侧跖骨点(mt.f)的直线距离
蜗牛：腹足科众多水生或陆栖软体动物中的一种，通常带有一螺旋似的厚壳，足宽且向内旋，脑袋清晰。
Any of numerous aquatic or terrestrial mollusks of the class Gastropoda, typically having a spirally coiled shell, broad retractile foot, and distinct head.
他们造了一艘十足尺寸的千禧年猎鹰(Millennium Falcon)，有65英尺宽，80英尺长。
And they built a full-size Millennium Falcon, which was 65 feet wide and 80 feet long.
翼龙足迹为四足行走，行迹宽。
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