rotary

• 与旋转有关的，或以旋转为特征的；作圆周运动的。

Relating to or characterized by rotation; moving in a circular manner.

1. Relating to rotationB2formal

   Involving or characterized by turning around a central axis.

   旋转的

   • The rotary engine uses a unique design for power generation.
   • A rotary motion is essential for many mechanical devices.
   • The machine's rotary blades cut through the material efficiently.

   同义词rotationalrotatoryspinningturning

   反义词linearrectilinearstationarytranslational

2. Moving in a circleB2formal

   Describing something that moves or operates in a circular path.

   旋转的

   • The rotary dial on the old phone was fun to use.
   • A rotary club is named for its members rotating meeting locations.
   • The rotary motion of the Earth causes day and night.

   同义词circularspinningturningwhirling

• 名词，指环形交叉路口，车辆围绕中央岛行驶的圆形道路交叉方式；也指将交流电与直流电互相转换的电机，即旋转变流机。

A noun referring to a road junction where traffic moves in a circle around a central island, or an electrical converter that changes alternating current to direct current or vice versa.

1. Traffic circleB1formalamerican

   A road junction where traffic moves in a circular direction around a central island, allowing vehicles to merge and exit.

   环岛

   • Take the second exit at the rotary.
   • The rotary was redesigned to improve traffic flow.
   • Drivers must yield to cars already in the rotary.

   同义词circleroundabouttraffic circle

2. Electrical converterC1formaltechnical

   An electrical device that uses a synchronous machine to convert alternating current (AC) to direct current (DC) or vice versa.

   旋转式换流器

   • The technician installed a rotary to convert the power supply.
   • Rotaries are essential in some industrial power systems.
   • This old rotary needs maintenance to function properly.