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Materials & Substances — Lesson 16

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

casein

ˈkeɪsiːn

A milk protein used in making e.g. plastics and adhesives — many bodybuilders supplement their diet with casein protein powder.

كازين

Casein is the primary protein in cheese and gives it its characteristic texture.

عيّنة

catalysts

ˈkætəlɪsts

Catalysts are substances that speed up chemical reactions without being — enzymes act as biological catalysts in the human body.

محفزات

Enzymes act as biological catalysts in the human body.

عيّنة

caulk

kɔːk

Fill cracks, gaps, or joints in a surface with a waterproof material to prevent — the plumber will caulk the joints in the pipes.

يَسُدُّ

He used silicone to caulk the gaps around the windows.

عيّنة

caulking

ˈkɔːlɪŋ

A waterproof material, often made of latex or silicone, used to seal gaps and — he used caulking to fill the gaps between the tiles.

مادة مانعة للتسرب

We need to apply caulking around the windows before winter.

عيّنة

caustic

ˈkɔːstɪk

Any chemical substance that burns or destroys living tissue — the critic's caustic review devastated the young author.

كَاوٍ

Caustic soda is commonly used in industrial cleaning products.

عيّنة

celluloid

ˈseljəlɔɪd

A transparent, flexible plastic material made from cellulose, historically used — the toy was made of celluloid.

سيلولويد

Early movies were recorded on celluloid.

عيّنة

cellulose

ˈseljʊloʊs

A polysaccharide that is the chief constituent of all plant tissues and fibers — cotton is almost pure cellulose.

السليلوز

Cellulose is found in the cell walls of all plants.

عيّنة

cf

siː ˈɛf

Abbreviation of Latin 'confer', meaning 'compare' — the results contradict earlier findings (cf. Chapter 3).

قارن

The results contradict earlier findings (cf. Chapter 3).

عيّنة

chaff

tʃæf

Light-hearted teasing or banter — farmers burn the chaff after the harvest.

مِزَاح

Don't make such a fuss about my jokes—it's all just friendly chaff.

عيّنة

chalks

tʃɔːks

A soft whitish calcite — the chalks were nearly worn down to nothing.

طباشير

The teacher handed out chalks to the students.

عيّنة

char

tʃɑːr

A charred substance — be careful not to char the meat — a light sear is all you need.

تفحّم

The chef charred the peppers over an open flame.

عيّنة

chemicals

ˈkemɪkəlz

Material produced by or used in a reaction involving changes in atoms or molecules — many cleaning products contain strong chemicals.

المواد الكيميائية

Many cleaning products contain strong chemicals.

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الدُرج التالي · Materials & Substances — Lesson 17