It seems that there are two worlds - the world of huge things that we see everyday (a tree, a car, etc..) and a micro world of incredibly small things.

好像存在着两个世界，一个是我们肉眼每天见到的宏观世界(如树，车等)，另一个是由微小事物组成的微观世界。

youdao

Micro-action: Add up how much you spend on your car every year. Expenses will include car payments, interest on you car loan, gas, insurance, maintenance, parking tickets, etc.

微行动：算算自己每年为车花了多少钱，包括买车费用、买车贷款利息、汽油、保险、维修、停车费等等。

youdao

The car gets its power from two new micro-sized gas turbine engines that are slightly larger and longer than a human forearm.

汽车由2个微型燃气轮机提供动力，其尺寸比人的前臂稍长稍大一点。

youdao

Chargers include the Micro USB Car Charger, Micro USB 2 in 1 Wall Charger and the Micro USB Wall Charger.

ENGADGET: T-Mobile's new charger line is surprisingly interesting: fast, extra port, integrated cord management

The micro-size car adapter fits a variety of car DC jack orientations and locations.

ENGADGET: iLuv unveils the Aud 5: a Lightning speaker dock with Bluetooth connectivity for non-Apple wares

The 863 Program noticed, and last year it added a program to build a micro-electric car, inspired by bicycle components, for commuters.

NEWYORKER: Green Giant