Our factory professional produces in floor spring, door clip, plastic wheels, hinge, window lock handle and other projects necessary hardware.
本厂主要生产地弹簧，门夹，塑料轮，合页，窗锁，执手等工程配套五金。
The robot was the same size as a regular rat but resembled a simple plastic box on wheels.
这个机器老鼠和普通老鼠一样大，但看起来就像一个简易的带轮子的塑料盒子。
This accounts for our reaction to seemingly simple innovations like plastic garbage bags and suitcases on wheels that make life more convenient:"How come nobody thought of that before?"
这就解释了我们对塑料垃圾袋和带轮行李箱等看似简单的发明的反应：“为什么以前没有人想到这一点？”
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