noun
1 where water is stored
ADJECTIVE
▪ natural
▪ artificial , man-made
▪ underground
▪ water
▪ large
PREPOSITION
▪ in a/the ~
2 amount of sth that can be used
ADJECTIVE
▪ deep , huge , vast
VERB + RESERVOIR
▪ tap , tap into
PREPOSITION
▪ ~ of
▪
We can tap into the vast ~ of information available on the Internet