VOA慢速英语:安哥拉海岸上发现的古代海洋生物

giant – adj. very large

museum – n. a building in which interesting and valuable things such as paintings and sculptures or scientific or historical objects are collected and shown to the public

preserved – v. kept in its original state or in good condition

snapshot – n. a quick view or a small amount of information that tells you a little about what someone or something is like