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Materials & Substances — Lesson 11

بتتكلم بتتعلّم

تثبيت سريع للذاكرة

جاهز لاختبار نفسك؟

راجع الكلمات بالأسفل، ثم ابدأ جولة اللعب — خمس دقائق من التمارين السريعة تُثبّت كل كلمة في الذاكرة.

عيّنة

ammonia

əˈmoʊniə

A water solution of ammonia — the ammonia smell was very strong in the lab.

أمونيا

Ammonia is commonly used in household cleaning products.

عيّنة

aniline

ˈænəlɪn

A toxic organic compound (C₆H₅NH₂) consisting of a benzene ring with an amino — the experiment requires a small amount of aniline dissolved in ethanol.

أنيلين

Aniline is an important intermediate in the production of many synthetic dyes.

عيّنة

anthracite

ˈænθrəsaɪt

A hard natural coal that burns slowly and gives intense heat — many factories use anthracite as fuel for their boilers.

أنثراسايت

Anthracite burns with a clean flame and produces very little smoke.

عيّنة

antibodies

ˌæntaɪˈbɑːdɪz

Proteins produced by the immune system that identify and neutralize harmful — blood tests can detect specific antibodies.

أجسام مضادة

The body produces antibodies to fight infections.

عيّنة

antifreeze

ˈænti.friːz

A liquid added to the water in a cooling system to lower its freezing point — the mechanic added antifreeze to the car's radiator.

مضاد التجمد

Remember to check the antifreeze level before winter arrives.

عيّنة

antigen

ˈæntədʒən

A substance, usually a protein, that enters the body and causes the immune — the vaccine contains a weakened form of the antigen to stimulate immunity.

مُسْتَضِد

The vaccine contains a weakened form of the antigen to stimulate immunity.

عيّنة

antigens

ˈæntɪdʒənz

Substances, usually proteins, on the surface of cells, viruses, fungi, or — antigens trigger the immune system to produce specific antibodies.

مُسْتَضِدّات

The vaccine contains weakened antigens that help the body build immunity.

عيّنة

antiknock

ˌæntiˈnɑːk

Any of various compounds that are added to gasoline to reduce engine knocking — modern engines require fuel with good antiknock properties.

مُضادُ الطَّرَق

Lead was once commonly used as an antiknock additive in gasoline.

عيّنة

antimatter

ˌæntiˈmætər

A substance composed of antiparticles, which have the same mass as ordinary — antimatter is extremely rare in our universe.

المادة المضادة

Antimatter is the mirror image of ordinary matter.

عيّنة

antimony

ˈæntɪmoʊni

A brittle, silvery-white metalloid element with the atomic number 51, used in — antimony is often alloyed with lead to make it harder.

أنتيموني

Antimony is often alloyed with lead to make it harder.

عيّنة

antioxidant

ˌæntiˈɑksɪdənt

A substance that prevents or slows damage to cells caused by free radicals — blueberries are rich in antioxidants.

مُضادٌ للأكسدة

Blueberries are rich in antioxidants.

عيّنة

aquamarine

ˌækwəməˈriːn

A transparent variety of beryl that is blue green in color — her eyes were the color of aquamarine.

أَزْرَق مَائِيّ

Her eyes were the color of aquamarine.

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الدُرج التالي · Materials & Substances — Lesson 12