比如过，在一个测试中，研究人员向两个组展示他是如何打开一个塑料管子从中取出食物的。
In one test, for example, researchers showed both groups how to open up a plastic tube to get at a treat.
这儿有另一棵更古怪的概念圣诞树，由许许多多的不同颜色的塑料管子制成的。总之，一个词：独一无二。
Here's another weird conceptual Christmas tree made out of different colours of plastic tubing. It's, um, well, unique.
本文利用有限元法对塑料管材的挤出进行模拟。主要讨论了影响塑料管材挤熔接痕形成的因素，以及管子冷却过程的热传递。
This essay described the FEM simulation of plastic pipe extrusion: the factors of melt line formation and heat transfer of cooling processing were mainly discussed.
两根塑料管接在储水箱上，一根管子用来让水流入，一根用来导出水。
Two rubber pipes are attached to the water storage tank. One pipe lets water flow into the system. The other lets water flow out.
两根塑料管接在储水箱上，一根管子用来让水流入，一根用来导出水。
Two rubber pipes are attached to the water storage tank. One pipe lets water flow into the system. The other lets water flow out.
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