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
糖粉筛；有孔调味瓶；铸工；铸造工人；投掷者；铸造者；施放者。；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。；顶部带孔、用于撒糖、盐、胡椒等调味品的罐子。
a small wheel on a pivot attached to the bottom of furniture or equipment so that it can be moved easily
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.
汽车前轮转向时旋转所绕轴线的倾角,垂直轴线定义为零主销后倾角
The angle of the axis around which a car's front wheels rotate when the steering wheel is turned, with a vertical axis being defined as zero caster.
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。
用法提示：caster 是可数名词，这里指椅子等家具底部的脚轮。
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。
用法提示：这里 casters 用复数形式，表示手推车底部的多个脚轮。
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。
用法提示：caster 作为名词指万向脚轮，句中用复数形式说明前轮部件。
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。
wheel 是更宽泛的词，可指任何轮子；口语中可用它代替 caster（如 chair with wheels），但会丢掉“可转向的小脚轮”这一精确含义。
grammar · medium
易错句子The trolley has four caster.
正确表达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。
grammar · medium
易错句子He casters the iron into a mold.
正确表达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。
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。
cast + -er（动词 cast 表“投掷；浇铸”，-er 为名词后缀，表人或器具；无前缀）；同根词：cast、casting；同后缀词：teacher、worker、player
金属是铸造工人（caster）加工的材料。
熔化的金属浇入模具后由铸造工人处理。
铸模是铸造工人（caster）用来成型金属的器具。
熔炉用来熔化金属，是铸造工序中的重要设备。
铸造厂是铸造工人（caster）工作的地方。
Dictionary facts from ECDICT, WIKTIONARY.