to try to discover all the facts about something

to take part in something

to need or demand something

to study a subject in detail in order to discover new information about it

to provide the power or energy that makes someone or something work

why you do something or why something exists

to make someone more likely to do something

far away

making you feel very happy and enthusiastic

someone who has a lot of skill in something or a lot of knowledge about something

using or involved with the most recent and advanced electronic machines, computers, etc

to examine the facts about a situation

to meet someone or something, especially when you do not expect it