核心词议：
n. 变速箱；变速器；齿轮箱
gearbox 基本解释
n. 变速箱；变速器；齿轮箱
速记方法
知识扩展
gearbox 变化形式
复数： gearboxes
中文词源： gearbox
精选例句
1、 Then there is the six-speed gearbox;cruise control;air-conditioning;alarm and immobiliser.
然后是六速变速箱、巡航控制系统、空调、报警和固定器。
常见考点例句：
- No. granddad didn 't do the gearbox .
- 我爷爷不是做变速箱的。
- They have more oomph , and no need of a gearbox to deliver it .
- 它们动力更加强劲，而且不需要变速器来传动。
- The wings are driven by a crankshaft that is connected to a gearbox .
- 机翼由连接着齿轮箱的机轴驱动。
- Motor-driven thresher , marine gearbox , combine harvester .
- 机动脱粒机、船用齿轮箱、联合收割机。
- This engine uses a gearbox to allow the fan at the front and the turbine at the back to run at different , but optimal speeds .
- 该引擎利用齿轮箱，令前端风扇和后端涡轮机能以各自不同但却最优的速度运行。
