A1 noun 中性

asteroid

/ˈæstərɔɪd/

An asteroid is a large rock that travels through space and orbits the sun. It is much smaller than a planet and is mostly made of rock and metal.

例句

3 / 5
1

The scientists found a new asteroid in space.

The scientists found a new asteroid in space.

2

The space agency is tracking the trajectory of the asteroid.

The space agency is tracking the trajectory of the asteroid.

3

Look at that huge asteroid in my science book!

Look at that huge asteroid in my science book!

词族

名词
asteroid
形容词
asteroidal
相关
astronomy
💡

记忆技巧

The prefix 'aster-' means star (like the flower 'aster'). An asteroid looks like a star in the sky but is a rock ('-oid' means 'like').

快速测验

A large ___ is moving in space near the sun.

正确!

正确答案是: asteroid

例句

1

The scientists found a new asteroid in space.

everyday

The scientists found a new asteroid in space.

2

The space agency is tracking the trajectory of the asteroid.

formal

The space agency is tracking the trajectory of the asteroid.

3

Look at that huge asteroid in my science book!

informal

Look at that huge asteroid in my science book!

4

Most asteroids in our solar system are located in the belt between Mars and Jupiter.

academic

Most asteroids in our solar system are located in the belt between Mars and Jupiter.

5

Our company is investing in technology for future asteroid mining.

business

Our company is investing in technology for future asteroid mining.

词族

名词
asteroid
形容词
asteroidal
相关
astronomy

常见搭配

asteroid belt asteroid belt
large asteroid large asteroid
asteroid impact asteroid impact
near-Earth asteroid near-Earth asteroid
asteroid field asteroid field

常用短语

the asteroid belt

the group of rocks between Mars and Jupiter

killer asteroid

an asteroid that could destroy life on Earth

asteroid strike

when an asteroid hits a planet

容易混淆的词

asteroid vs comet

A comet is made of ice and dust and has a tail, while an asteroid is made of rock and metal.

asteroid vs meteor

A meteor is a rock that enters Earth's atmosphere and burns up, but an asteroid is still in space.

📝

使用说明

Use 'asteroid' when talking about rocks orbiting the sun in space. It is a technical term but used commonly in science fiction and news about space.

⚠️

常见错误

Don't confuse an asteroid with a 'shooting star,' which is actually a meteor burning in the atmosphere.

💡

记忆技巧

The prefix 'aster-' means star (like the flower 'aster'). An asteroid looks like a star in the sky but is a rock ('-oid' means 'like').

📖

词源

From the Greek word 'asteroeides,' which means 'star-like' or 'star-shaped.'

语法模式

Countable noun Plural form: asteroids Usually used with 'the' when referring to a specific one
🌍

文化背景

Asteroids are popular in movies as dangerous objects that might hit Earth, creating a sense of wonder and fear about space.

快速测验

A large ___ is moving in space near the sun.

正确!

正确答案是: asteroid

更多nature词汇

magma

A1

Magma is extremely hot, liquid rock found deep under the Earth's surface. It is the material that forms volcanoes and turns into lava when it comes out of the ground.

fungi

A1

Fungi are a large group of living things, such as mushrooms, molds, and yeast, that grow on soil or old plants. They are different from plants because they do not use the sun to make food, but instead break down dead material.

galaxy

A1

A galaxy is a very large group of stars, gas, and dust held together by gravity. There are billions of galaxies in the universe, and our home is called the Milky Way.

fossil

A1

A fossil is the remains or trace of a plant or animal that lived a very long time ago, preserved in rock. It helps scientists understand how life on Earth has changed over millions of years.

pollen

A1

Pollen is a fine powder, usually yellow, produced by flowers and trees. It is carried by wind or insects to other plants so they can produce seeds and fruit.

stream

A1

A stream is a small, narrow flow of water that moves naturally along a fixed path. It is smaller than a river and can usually be found in forests or parks.

swamp

A1

A swamp is a low area of land that is always very wet or covered with water. It usually has many trees and plants growing in it and is often home to animals like frogs and alligators.

tundra

A1

A large, flat area of land in very cold parts of the world, such as the Arctic. In this area, the ground is frozen and there are no trees, only small plants like moss.

high

A1

tall

rainforest

A1

A thick forest in a tropical area that receives a large amount of rain throughout the year. It is a dense habitat known for having many different types of plants and animals.

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