The robot stands on four small wheels.

机器人靠四个小轮子站着。

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A small motorbike having a low frame, small wheels, and elevated handlebars.

微型摩托车一种车架低、车轮小且手柄较高的小型摩托车。

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The small wheels hidden underneath thevehicle’s aerodynamic shape are able to rotate 180 degrees.

Citizen Tarelkin车轮小巧，隐藏在符合空气动力学原理的车身下方，可以180度旋转。

youdao

"Even petty bribery,small bribery, is not a long-term sustainable approach to kind of grease the wheels,"

VOA: standard.2009.11.17

There is a lot riding on its small wheels.

FORBES: Magazine Article

Pay particular attention to the jockey wheels (these are small wheels in the chain cage of the rear mech that guide the chain round the sprockets) because they pick up hard-packed dirt from the chain.

BBC: Sport

The design includes 26 centimeters-round compact plastic gear wheels and a small generator.

CNN: Lucien Gambarota: Alternative energy pioneer