foetal : of or relating to a fetus.
fetus : an unborn offspring of a mammal, in particular an unborn human baby more than eight weeks after conception.
shed : a simple roofed structure, typically made of wood or metal, used as a storage space, a shelter for animals, or a workshop. park (a vehicle) in a depot. (of a tree or other plant) allow (leaves or fruit) to fall to the ground.
shed light : to help to explain
archaeologist : 고고학자
unearth : find (something) in the ground by digging.
adolescent : (of a young person) in the process of developing from a child into an adult. an adolescent boy or girl.
Neolithic : 신석기시대
Bronze Age : 청동기시대
amber : 호박색
ancient : belonging to the very distant past and no longer in existence. an old person.
ancestor : a person, typically one more remote than a grandparent, from whom one is descended.