Vocabulary

• off the shelf: Readily available; not custom-made.
• solar cells: Photovoltaic cells that convert sunlight into electricity.
• in public: In a place where anyone can see or hear you.
• at the moment: At this time; now
• switch on: To put something electrical on or off
• allow for: To take into consideration
• look around: To explore a place; search for something.
• of course: Sure ; Certainly
• such as: For example; like
• answer to: To be responsible to someone and have to explain your actions to them.
• in practice: In reality or actual use; as opposed to in theory.
• in order to: For the purpose of; with the aim of.
• close by: Near in distance; nearby.
• lead: Wire for electricity, computer, etc.; cable
• subtle: Delicate or slight so it is difficult to perceive
• exist: To be present, alive or real
• integrate: To combine together; make into one thing
• standard: Official unit of measuring something
• light: To cause something to burn; put a burning match to
• infrastructure: Basic necessary equipment for a country or region
• instrument: Gauge for measuring something, e.g. temperature
• energy: Physical or mental strength
• video: Recording capturing action with sound
• receive: To get something someone has given or sent to you
• cell: Smallest unit of living things in biology
• shelf: Flat, narrow surface on an area of rock or sand
• Internet: Worldwide computer network system
• harvest: Gathering crops from the fields; the crops