▸ دُرج العيّنات
Materials & Substances — Lesson 8
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عيّنة
antibody
ˌæntiˌbɑːdi
A protein produced by the immune system to identify and neutralize harmful — the immune system produces antibodies to fight infections.
جسم مضاد
The immune system produces antibodies to fight infections.
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عيّنة
asbestos
æzˈbɛstəs
A heat-resistant mineral fiber that was widely used in building materials — the old factory was found to contain dangerous levels of asbestos.
أسبستوس
Asbestos was commonly used in building construction until the 1980s.
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عيّنة
asphalt
ˈæsfælt
A black, tar-like substance used for paving roads and roofing materials — asphalt can get very hot in summer.
أسفلت
The workers laid new asphalt on the main road.
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عيّنة
balm
bɑːm
Any of various aromatic resinous substances used for healing and soothing — lip balm is essential in cold weather.
بَلْسَم
She applied some balm to her sunburned skin.
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عيّنة
bran
bræn
The hard outer layer of cereal grains such as wheat, rice, or oats — bran is rich in dietary fiber.
نخالة
I add bran to my breakfast cereal for more fiber.
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عيّنة
brass
bræs
An alloy of copper and zinc — the trumpet is made of brass.
نحاس
The trumpet is made of brass.
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عيّنة
caffeine
kæˈfiːn
A bitter, white alkaloid found in coffee, tea, and cocoa, which acts as a — coffee contains caffeine.
كافيين
Coffee contains caffeine.
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عيّنة
catalyst
ˈkæt.əl.ɪst
A substance that causes or accelerates a chemical reaction without being changed itself — the改革 served as a catalyst for social change.
مُحَفِّز
Enzymes act as catalysts in biological processes.
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عيّنة
chalk
tʃɔːk
A soft whitish calcite — I need to buy some chalk for my class.
الطباشير
The teacher wrote the equation on the chalkboard with chalk.
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عيّنة
charcoal
ˈtʃɑːrkoʊl
A black, porous substance made by burning wood or other organic material — the artist used charcoal to sketch the portrait.
فحم
The artist used charcoal to sketch the portrait.
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عيّنة
chlorine
ˈklɔr.iːn
A chemical element (symbol Cl) that is a greenish-yellow poisonous gas with a — scientists discovered chlorine in the 18th century.
الكلور
Chlorine is commonly used to disinfect swimming pools.
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عيّنة
cork
kɔːrk
A light, porous material from the bark of the cork oak tree, used especially — the cork floated on the water.
فللين
I put the cork back in the wine bottle.
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