ray

Tia sáng, tia đèn

a beam of light that comes from a source such as the sun or a lamp

• a ray of sunlight

Collocations ray of sunshine · beam of light

• A single ray of sunlight shone through the clouds.

  Một tia nắng duy nhất chiếu qua đám mây.

Tia bức xạ, tia X

a stream of particles or waves that are sent out from a radioactive source such as an X-ray machine

• X-rays

Collocations X-ray beam · gamma rays

• The patient was exposed to X-rays.

  Người bệnh đã tiếp xúc với tia X.

Đường thẳng, đường phát xạ

a straight line that extends in both directions without end

• a ray of a polygon

Collocations ray of a triangle · line segment

• Draw a ray from each vertex.

  Vẽ một đường thẳng từ mỗi đỉnh.

Cá đuối, cá manta

a type of fish with long, thin fins that look like rays of light

• a ray of a species

Collocations manta ray · stingray

• The stingray has a long, thin tail.

  Cá đuối có một cái đuôi dài và mảnh.

Điốt, diode

a type of electronic component that allows electricity to flow in only one direction

• a ray valve

Collocations ray tube · diode valve

• The circuit uses a diode to control the flow of current.

  Circuit sử dụng điốt để kiểm soát dòng điện.

Trục đối xứng, đường phân chia

a line that divides an object into two equal parts, each part being a mirror image of the other

• line of symmetry

Collocations axis of symmetry · symmetry line

• The butterfly's wings have a clear line of symmetry.

  Cánh bướm có một đường phân chia rõ ràng.

Tia điện, dòng electron

a stream of electrons that flows from a negatively charged object to a positively charged one

• electric ray

Collocations electrical discharge · static electricity

• The electric ray can produce a powerful shock.

  Tia điện có thể tạo ra một cú sốc mạnh.

Hy vọng, niềm tin

a feeling of hope or optimism about something in the future

• a ray of hope

Collocations ray of sunshine · beam of light

• There is a ray of hope for the future.

  Có một hy vọng cho tương lai.