A1 noun 中性

comet

/ˈkɒm.ɪt/

A comet is a small object in space made of ice and dust that travels around the sun. When it gets close to the sun, it develops a bright, long tail of gas and dust that can often be seen from Earth.

例句

3 / 5
1

Look at the sky; you can see the bright comet tonight.

Look at the sky; you can see the bright comet tonight.

2

The astronomical society is monitoring the trajectory of the newly discovered comet.

The astronomical society is monitoring the trajectory of the newly discovered comet.

3

Did you see that comet? It was so cool!

Did you see that comet? It was so cool!

词族

名词
comet
形容词
cometary
相关
coma
💡

记忆技巧

Think of a 'Comb' with long hair. The word comet comes from the Greek word for 'long-haired', referring to its long tail.

快速测验

Scientists used a telescope to watch the ___ fly past the sun.

正确!

正确答案是: comet

例句

1

Look at the sky; you can see the bright comet tonight.

everyday

Look at the sky; you can see the bright comet tonight.

2

The astronomical society is monitoring the trajectory of the newly discovered comet.

formal

The astronomical society is monitoring the trajectory of the newly discovered comet.

3

Did you see that comet? It was so cool!

informal

Did you see that comet? It was so cool!

4

Comets are often described as 'dirty snowballs' because they are composed of frozen gases and rock.

academic

Comets are often described as 'dirty snowballs' because they are composed of frozen gases and rock.

5

We have named our latest high-speed delivery service 'The Comet' to represent speed.

business

We have named our latest high-speed delivery service 'The Comet' to represent speed.

词族

名词
comet
形容词
cometary
相关
coma

常见搭配

bright comet bright comet
Halley's comet Halley's comet
comet tail comet tail
orbiting comet orbiting comet
spotted a comet spotted a comet

常用短语

Halley's Comet

Halley's Comet

comet-like speed

comet-like speed

a passing comet

a passing comet

容易混淆的词

comet vs meteor

A meteor is a small piece of rock that burns up in Earth's atmosphere, while a comet is a large icy body orbiting the sun.

📝

使用说明

The word is primarily used in scientific and general contexts to describe the specific space object. Figuratively, it can describe something that appears suddenly, shines brightly, and disappears quickly.

⚠️

常见错误

Learners often call any bright light in the sky a comet, but a comet stays visible for days or weeks, unlike a meteor which lasts only seconds.

💡

记忆技巧

Think of a 'Comb' with long hair. The word comet comes from the Greek word for 'long-haired', referring to its long tail.

📖

词源

From the Greek word 'kometes', which means 'long-haired star'.

语法模式

Countable noun Plural: comets Takes the definite article 'the' when referring to a specific one
🌍

文化背景

In many ancient cultures, comets were feared as omens or signs of important changes or disasters.

快速测验

Scientists used a telescope to watch the ___ fly past the sun.

正确!

正确答案是: comet

更多nature词汇

algae

A1

Algae are simple plants that grow in or near water and do not have ordinary leaves or roots. They can be very small like green spots or very large like seaweed found in the ocean.

predator

A1

A predator is an animal that hunts, kills, and eats other animals to survive. This word is also used to describe people or companies that take advantage of others.

prey

A1

Prey is an animal that is caught and killed by another animal for food. It is the animal that is hunted in nature.

carnivore

A1

A carnivore is an animal that gets its food from eating other animals. These animals are often called meat-eaters and have special teeth for hunting and eating flesh.

herbivore

A1

A herbivore is an animal that eats only plants, such as grass, leaves, and fruits. These animals do not eat meat or other animals.

savanna

A1

A savanna is a large, flat area of land covered with grass and only a few scattered trees. It is mostly found in hot regions, such as Africa and South America, and supports a wide variety of wildlife.

estuary

A1

An estuary is the wide part of a river where it joins the sea. It is a unique place where fresh water from the river mixes with salty water from the ocean.

undergrowth

A1

Undergrowth refers to the small plants, bushes, and shrubs that grow on the ground beneath the taller trees in a forest or wood. It is often dense and can make walking through the area difficult.

germination

A1

Germination is the process where a seed starts to grow into a new plant. It happens when the seed has enough water, the right temperature, and oxygen.

evergreen

A1

An evergreen is a tree or plant that keeps its green leaves all year round, even in the winter. Unlike deciduous trees, it does not lose its foliage during the cold seasons.

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