1
a caster on [furniture/equipment]
指家具或机器底部可转动的轮子，也叫万向轮。
The chair has four casters on its legs.
这把椅子的腿上有四个脚轮。
脚轮；万向轮
casters — plural of caster
先理解核心含义，再看它在真实句子里的用法。
脚轮；万向轮
a small wheel on a pivot attached to the bottom of furniture or equipment so that it can be moved easily
The chair has four casters on its legs.
这把椅子的腿上有四个脚轮。
投掷者；铸造者；施放者。
Someone or something that casts.
安装在大物体底部的带轮组件,便于滚动；通常有轮子、轴和安装件,有时带可旋转转盘。
A wheeled assembly attached to a larger object at its base to facilitate rolling. A caster usually consists of a wheel (which may be plastic, a hard elastomer, or metal), an axle, a mounting provision (usually a stem, flange, or plate), and sometimes a swivel (which allows the caster to rotate for steering).
顶部带孔、用于撒糖、盐、胡椒等调味品的罐子。
A shaker with a perforated top for sprinkling condiments such as sugar, salt, pepper, etc.
放置一套调味瓶或佐料瓶的支架
A stand to hold a set of shakers or cruets.
The office chair has five casters, which makes it easy to move around the desk.
这把办公椅有五个脚轮，因此很容易在办公桌周围移动。
She oiled the casters on the trolley so the cart would stop squeaking.
她给手推车的脚轮上了油，这样推车就不会吱吱作响了。
You can lock the front casters on the stroller to stop it from rolling away.
你可以锁住婴儿车的前轮脚轮，防止它滑走。
指家具或机器底部可转动的轮子，也叫万向轮。
The chair has four casters on its legs.
这把椅子的腿上有四个脚轮。
指顶部有细孔的调味品瓶，用来撒糖粉等。
She passed me the sugar caster at breakfast.
早餐时她把糖粉瓶递给了我。
指把熔化的金属浇入模具的工人。
The caster of the bronze statue worked in a foundry.
这座铜像的浇铸工在铸造厂工作。
Not this
The trolley has four caster.
Use this
The trolley has four casters.
caster 作“脚轮”是可数名词，four 后要用复数形式 casters；汉语名词没有复数变化，所以容易漏掉词尾 s。
Not this
He casters the iron into a mold.
Use this
He casts the iron into a mold.
caster 是名词，表示“铸工、脚轮、调味瓶”，不能作动词。表示“铸造”应用动词 cast，主语 he 时用第三人称单数 casts。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
万向脚轮
Choose a swivel caster if you need to turn the cart in tight spaces.
如果需要在狭小空间转动推车，就选万向脚轮。
带锁脚轮
The hospital bed has locking casters so it stays in place.
病床装有带锁脚轮，可以固定不动。
家具脚轮
The sofa rests on four furniture casters so it can be moved easily.
沙发架在四个家具脚轮上，便于移动。
糖粉罐
She used a sugar caster to dust the cake with powdered sugar.
她用糖粉罐往蛋糕上撒糖粉。
主销后倾角
The mechanic adjusted the caster angle to improve handling.
修车师傅调整了主销后倾角以改善操控。
Use casters naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
想象办公椅的脚轮 caster 一转，椅子像被 cast(抛)出去一样滑走。
语域：mixed 常见场景：furniture and equipment、kitchen and baking、industrial metalworking caster 有多个名词义项，语域随场景而变化：脚轮/万向轮多用于家具和设备；糖粉筛（撒糖瓶）多用于厨房或烘焙；铸工一词多用于工业或正式场合。实际使用中通常需根据上下文判断具体含义。
faster、master、plaster、disaster、blaster 都与 caster 押韵：从重读元音到词尾都是 /æstər/（美式）或 /ɑːstə/（英式）。注意 castle 是形近词：它也以 cast 开头，但其中的 t 不发音，读作 /ˈkæsəl/（美式）或 /ˈkɑːsəl/（英式），不要读成 /ˈkæstər/。
Dictionary facts from ECDICT, WIKTIONARY.