the hard material that forms the trunk and branches of a tree
noun
例句:
• The table is made of solid wood.
• He chopped wood for the fireplace.
a hard, solid material such as iron, gold, or steel
noun
例句:
• The gate is made of metal.
• Heavy metal is both a type of music and a material.
a hard, transparent material used for windows and bottles
noun
例句:
• The window is made of glass.
• She put the flowers in a glass vase.
a drinking container made of glass
noun
例句:
• He poured water into a glass.
• She raised her glass for a toast.
a synthetic material made from polymers, used to make many everyday objects
noun
例句:
• The bottle is made of plastic.
• We should reduce our use of single-use plastic.
a soft white fibrous substance from the seeds of a tropical plant, used to make fabric
noun
例句:
• The shirt is made of one hundred percent cotton.
• Cotton was one of the most important crops in the American South.
material made from the skin of an animal
noun
例句:
• He bought a leather jacket for the winter.
• The sofa was upholstered in fine Italian leather.
a tough elastic substance made from the latex of a tropical plant or synthetically
noun
例句:
• The tyres are made of reinforced rubber for extra durability.
• Natural rubber is harvested from rubber trees in Southeast Asia.
a piece of rubber or plastic used for erasing pencil marks
noun
例句:
• She needed a rubber to correct the mistakes in her drawing.
• Always use a rubber gently to avoid tearing the paper.
a heavy building material made from a mixture of cement, sand, gravel, and water
noun
例句:
• The foundation was poured with concrete.
• Concrete is the most widely used construction material in the world.
existing in a physical form; specific and definite rather than abstract
adjective
例句:
• We need concrete evidence before making accusations.
• Do you have any concrete plans for the weekend?
a fine, lustrous natural fibre produced by silkworms; fabric made from this fibre
noun
例句:
• She wore a beautiful dress made of pure silk.
• The Silk Road connected ancient China with the Mediterranean world.
the soft, thick fiber that covers sheep and is used to make yarn and fabric
noun
例句:
• This sweater is made from pure wool and is very warm.
• The farmer sheared the sheep to collect the wool.
a light, strong fabric made from the fibers of the flax plant
noun
例句:
• She chose a linen shirt for the summer because it breathes well.
• The tablecloth was made of fine white linen.
a stiff, sticky type of earth that can be molded when wet and hardened when baked
noun
例句:
• She shaped the clay into a beautiful vase.
• The soil in this area contains a lot of clay.
a hard, solid nonmetallic mineral matter
noun
例句:
• The house is built of stone.
• She skipped stones across the lake.
a reddish-brown metal that conducts heat and electricity well, used in wiring and pipes
noun
例句:
• The electrician ran copper wire through the walls of the house.
• Copper pipes are common in older plumbing systems.
a lightweight silvery-white metallic element widely used in manufacturing
noun
例句:
• The aircraft fuselage is made primarily of aluminum alloy.
• She recycled the aluminum cans to earn extra pocket money.
a mass of small bubbles formed on or in a liquid, or a light spongy material full of air pockets
noun
例句:
• The waves left a line of white foam along the beach.
• The mattress is made of memory foam that molds to your body.
a soft, smooth fabric with a short, dense pile on one side
noun
例句:
• She wore a deep red velvet dress to the gala.
• The jeweler displayed the rings on a piece of black velvet.
a brownish-yellow alloy of copper and tin; the color of this metal
noun
例句:
• The ancient statue was cast in bronze over two thousand years ago.
• She won the bronze medal at the Olympic Games.
a hard strong alloy of iron with carbon and other elements
noun
例句:
• The bridge was built with steel beams.
• The steel industry has declined in recent decades.
a hard, white, translucent ceramic material used to make dishes, tiles, and decorative objects
noun
例句:
• The antique porcelain vase was worth thousands of dollars.
• She carefully washed the porcelain teacups by hand.