5月15日前后，新船的龙骨已经搁在造船所了；不久，船首材和船尾材也已用榫头分别接在龙骨的两头，几乎直立起来。
About the 15th of May the keel of the new vessel lay along the dockyard, and soon the stem and stern-post, mortised at each of its extremities, rose almost perpendicularly.
研究小组发现，人们以直立步态行走时脚跟和脚趾深度几乎相同。
People walking with an erect gait produced footprints with nearly equal heel and toe depths, the team found.
尝试把它和它恢复，几乎是其神奇的直立位置。
Try to push it over and it regains , almost magically its upright position.
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