A child begins in a colourtube, allowing its interest to guide it through various fields of knowledge and explore their interconnections.
色彩缤纷的设计能够引起儿童的兴趣，从而引导并激发他们对不同领域的知识和相关学科的探索。
2
Travelling on the London underground (the 'tube') presents few difficulties for visitors because of the clear colour-coded maps.
现在旅游者在伦敦乘地铁一点也不困难，因为颜色编码的地图。
3
Any undesired particles cast a shadow which is detected by the Cognex cameras making it possible to detect objects which are the same colour as the tube itself.