1
the gearbox of [thing]
常用‘the gearbox of + 名词’来指明某物的变速箱，语气稍正式。
The gearbox of this truck is damaged.
这辆卡车的变速箱损坏了。
变速箱；齿轮箱
gearboxes — plural of gearbox
先理解核心含义，再看它在真实句子里的用法。
变速箱；齿轮箱
the metal casing that encloses a train of gears
The gearbox of this truck is damaged.
这辆卡车的变速箱损坏了。
An enclosed gear train.
密封齿轮组的金属外壳
the shell (metal casing) in which a train of gears is sealed
That part of a car's transmission containing the train of gears, and to which the gear lever is connected.
The mechanic said the gearbox in my car needs to be replaced.
修理工说我车里的变速箱需要更换。
The factory produces gearboxes for many car models.
这家工厂为许多车型生产齿轮箱。
This machine's gearbox is sealed to prevent oil leaks.
这台机器的齿轮箱是密封的，以防漏油。
常用‘the gearbox of + 名词’来指明某物的变速箱，语气稍正式。
The gearbox of this truck is damaged.
这辆卡车的变速箱损坏了。
口语中更自然地说‘something's gearbox’。
The car's gearbox needs a new clutch.
这辆汽车的变速箱需要一个新离合器。
gearbox 可作定语修饰名词，如 gearbox oil（变速箱油）。
Check the gearbox oil regularly.
定期检查变速箱油。
Not this
My car has six gearboxes.
Use this
My car has six gears.
gearbox 指整个变速箱总成（外壳及内部齿轮组），而单个挡位或传动比要用 gear。表示一辆车有几个挡位时，应该说 six gears；也可以说 a six-speed gearbox。
Not this
The mechanic repaired both gearboxs.
Use this
The mechanic repaired both gearboxes.
gearbox 以 -x 结尾，复数形式要加 -es 变成 gearboxes，而不是直接加 -s 写成 gearboxs。这是名词复数的拼写规则。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
自动变速箱
This model comes with an automatic gearbox.
这款车型配备自动变速箱。
手动变速箱
He prefers a manual gearbox for better control.
他更喜欢手动变速箱，以便更好地控制。
变速箱油
You should check the gearbox oil level regularly.
你应该定期检查变速箱油位。
变速箱壳体
The gearbox housing protects the gears from damage.
变速箱壳体保护齿轮免受损坏。
变速箱故障
The car broke down due to gearbox failure.
这辆车因变速箱故障而抛锚。
变速箱维修
The gearbox repair cost more than expected.
变速箱维修费用比预期要高。
Use gearboxes naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
gear（齿轮）和box（箱子）合在一起：装着齿轮的箱子就是gearbox变速箱。
语域：neutral 常见场景：Automotive repair、Mechanical engineering、Technical manuals gearbox 是中性、通用的技术用语，通常指变速箱或齿轮箱；比较常见于汽车维修、机械工程和技术手册等书面或专业场合，日常口语中较少使用。
真正押韵的词：box、sandbox、mailbox、toolbox 与 gearbox 的尾音 /bɑks/ 相同；fox、socks 也以 /ɑks/ 押韵。注意拼写相似的 gear /ɡɪr/ 和 boxer /ˈbɑksər/ 发音并不与 gearbox 整体相同。
Dictionary facts from ECDICT, WIKTIONARY.