书籍 Solutions - 初中级 - 单元9 - 9A

a substance from which things can be made

a thick and stiff type of paper material that is often used for packaging and making boxes

a non-metallic, inorganic material that is typically made from clay, minerals, and other raw materials

a hard material used for building structures, made by mixing cement, water, sand, and small stones

a metallic chemical element that has a red-brown color, primarily used as a conductor in wiring

a container that is used for drinks and is made of glass

a valuable yellow-colored metal that is used for making jewelry

a metallic chemical element with a silvery-gray appearance, widely used for making tools, steel, buildings, and various industrial products

strong material made from animal skin and used for making clothes, bags, shoes, etc.

a tough synthetic fiber that is light and elastic, used in textile industry

the thin sheets on which one can write, draw, or print things, also used as wrapping material

a light substance produced in a chemical process that can be formed into different shapes when heated

a material that is elastic, water-resistant, and often used in various products such as tires, gloves, and erasers

a type of hard metal that is made of a mixture of iron and carbon, used in construction of buildings, vehicles, etc.

a hard material, usually made of minerals, and often used for building things

the hard material that the trunk and branches of a tree or shrub are made of, used for fuel or timber

an amount of something that is kept hidden

an open shoe that fastens the sole to one's foot with straps, particularly worn when the weather is warm

a foldable door that can be transformed into a makeshift ping pong table

the electricity supply that is distributed to households, businesses, and other facilities through power grids and transmission lines

using a battery as the main source of energy to operate a device or equipment

energy that is generated from the sun's radiation using solar panels, which convert sunlight into electricity

the outer form or edges of something or someone

(physics) the measure of the rate at which work is done, and is typically measured in watts, which are equivalent to joules per second

in or along a direct line, without bending or deviation

having a shape that is rounded or bent rather than straight

shaped like a rectangle, with four right angles

pertaining to the shape of a sphere, especially in geometric or physical contexts

a shape with four equal straight sides and four right angles, each measuring 90°

shaped like a triangle, with three sides and three angles

having a shape like a circle

(of adevice or equipment) not connected to a power source by a cord or cable, and instead uses a battery or other means of power

(of a battery or device) capable of being supplied with electrical power again

the process of building or creating something, such as structures, machines, or infrastructure

a container that is used for drinks and is made of glass

A round object in front of the driver used to control the direction of a vehicle

(of a person) having a greater than average height

a part of an object designed for grasping, holding, or carrying it

a place with buildings and facilities for military operations and activities

the removable cover at the top of a container

to push a thing tightly against something else

to receive or come to have something

to travel or move from one location to another

to publish, display, or make available online or in a physical location for others to see or read

to move toward a location that the speaker considers to be close or relevant to them

a light silver-gray metal used primarily for making cooking equipment and aircraft parts