1
an asteroid
An asteroid passed close to Earth yesterday.
一颗小行星昨天近距离掠过地球。
小行星
asteroids — plural of asteroid
先理解核心含义，再看它在真实句子里的用法。
小行星
A small rocky object that orbits the Sun, mainly found in the asteroid belt between Mars and Jupiter.
An asteroid passed close to Earth yesterday.
一颗小行星昨天近距离掠过地球。
自然存在的固体天体,小于行星和矮行星,大于流星体,非彗星,绕恒星运行,常形状不规则
A naturally occurring solid object, which is smaller than a planet and a dwarf planet, larger than a meteoroid and not a comet, that orbits a star and often has an irregular shape.
海星纲的任何成员；海星
Any member of the taxonomic class Asteroidea; a starfish.
由岩石和金属组成的小型天体,绕太阳运行,主要位于火星和木星轨道之间
any of numerous small celestial bodies composed of rock and metal that move around the sun (mainly between the orbits of Mars and Jupiter)
太阳系中,在木星轨道内运行的天体
In the Solar System, such a body that orbits within the orbit of Jupiter.
Scientists are monitoring an asteroid that will pass close to Earth next month.
科学家们正在监测一颗下个月将接近地球的小行星。
The asteroid belt between Mars and Jupiter contains millions of rocky objects.
火星和木星之间的小行星带包含了数百万颗岩石天体。
A large asteroid impact is believed to have caused the extinction of the dinosaurs.
一颗大型小行星的撞击被认为导致了恐龙的灭绝。
An asteroid passed close to Earth yesterday.
一颗小行星昨天近距离掠过地球。
The asteroid belt lies between Mars and Jupiter.
小行星带位于火星和木星之间。
Many asteroids are composed of rock and metal.
许多小行星由岩石和金属组成。
Not this
There are many asteroid in the asteroid belt.
Use this
There are many asteroids in the asteroid belt.
英语中 asteroid 是可数名词，表示多个小行星时需加复数词尾 -s。汉语‘小行星’没有复数变化，所以学习者容易遗漏复数标记。改为复数形式以符合英语语法规则。
Not this
The spacecraft landed in an asteroid.
Use this
The spacecraft landed on an asteroid.
表示着陆在某个表面通常用介词 on，而 in 表示内部。小行星是固体表面，所以用 on。汉语‘在……上’和‘在……里’区分明确，但英语介词选择依赖物体性质。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
小行星带
The asteroid belt lies between Mars and Jupiter.
小行星带位于火星和木星之间。
小行星撞击
Scientists study the effects of asteroid impacts.
科学家研究小行星撞击的影响。
近地小行星
NASA tracks near-Earth asteroids.
美国宇航局追踪近地小行星。
小行星任务
The spacecraft launched an asteroid mission.
该航天器发射了一项小行星任务。
小行星区域
The ship navigated through an asteroid field.
飞船穿过了小行星区域。
小行星采矿
Asteroid mining could provide valuable resources.
小行星采矿可以提供宝贵的资源。
小行星带不是该去的地方，而是该避开的地方。
Han Solo warned that the asteroid field is not a place to go, it's a place to avoid.
汉·索罗警告说，小行星带不是该去的地方，而是该避开的地方。
小王子住在一个叫B-612的小行星上。
In the story, the little prince lives on an asteroid called B-612.
故事中，小王子住在一个叫B-612的小行星上。
Use asteroids naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
用谐音'阿斯特罗伊德'联想为'阿斯特（人名）的小行星罗伊德'，帮助记忆。
neutral
All listed words share the '-oid' ending and rhyme with /ɔɪd/.
Dictionary facts from ECDICT, WIKTIONARY.