VOA慢速英语:Tunnels in Gemstone Might Be Sign of Life

habitat – n. the place or type of place where a plant or animal naturally or normally lives or grows

gemstone – n. a stone that can be used in jewelry when it is cut and polished

tunnel(s) – n. a passage that goes under the ground or through a hill or other material

intrigued – v. made to want to know more about something

bore(d) – v. to make a hole or tunnel in something with a tool or by digging

three-dimensional – adj. having or seeming to have length, width, and depth

fungi – n. a group of living things, such as molds, mushrooms, or yeasts, that often look like plants but have no flowers and that live on dead or decaying things

unique to – adj. belonging to or connected with only one particular thing, place, or person

evolve(d) – v. to change or develop slowly often into a better, more complex, or more advanced state

visible – adj. able to be seen