He insisted that getting involved with the project allowed police to show their "fun side" and made them look "cooler" and "more approachable".
沃勒认为，参与这一项目让警察们展现出了他们“有趣的一面”，让他们看起来“更酷、更容易接近”。
2
As the power piston moves to the right, the yellow linkage forces the loose-fitting, red piston(on the left half of the machine) to displace air to the coolerside of the engine.
当施力活塞到达右边时，黄色连杆会轻轻地带动红色“活塞”（在机器左边），使空气移到引擎较冷的一边。
3
Open re-circulating cooling water shall be on the tube side of the cooler.