Vocabulary

• have to: Must do
• in fact: Used to emphasize the truth of a statement, especially one that contrasts with or contradicts something else.
• hit home: To have a strong emotional impact; to affect deeply.
• set out: To arrange something in an orderly fashion
• in mind: Being aware of or considering something.
• in pairs: Divided into or working as two people together.
• go on: To continue doing something
• around the world: In or to many countries.
• scratch the surface: To deal with a subject or problem without analyzing it thoroughly.
• work out
• bring together: To cause people to be friendly or to work well with each other.
• put together: To build or assemble something small, e.g. a toy
• unique: Unlike other things; being the only one like it
• sound: Sensible, dependable and reliable
• filter: Device to remove certain types of light, sound
• produce: Fresh foods such as fruits and vegetables
• science: Study of the physical world, based on facts
• identity: Collection of qualities that makes a person
• source: Piece of information; a person giving information
• speech: A formal talk to an audience
• target: A goal or amount you are trying to achieve
• voice: Ability to sing well
• sample: To try (e.g. food, drink), to see if you like it
• vocal: Expressing an opinion publicly in a loud way
• prosthetic: Artificial
• customize: To make, change according to the user's needs
• surrogate: Person appointed in the place of another