用杠杆操纵的单回路阀 Einkreis-Ventil mit Hebel
所以，包含拉绳子或操纵杠杆的测试就会对猫有利，而包含从一个地方移动到另一个地方，速度作为评定表现的标准的测试就对狗更有利。
Thus a test that involved pulling strings or operating levers would tend to favor a cat, while a test involving moving from place to place, where speed is a measure of performance, would favor a dog.
这是一部老式的电梯，由一个黄铜框架上的杠杆操纵。
It was an old-fashioned lift, operated by a lever on a brass box.
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