When rats are trained to self-administer by pushing a lever, they'll push it over and over again — even hundreds of times — to get a single dose of cocaine.
当老鼠被训练到能够通过推动操作杆来自己施用药物时，它们就会反复不断的推——甚至上百次——来获得一剂量的可卡因。
But I know from the lever rule that if I do that, I'm going to have precious little material over here.
但是从杠杆原理知道，如果我这样做了，最后得到的量很少。
I just don't get excited over the idea of yet another thing I could do if I pulled the right lever or set the right program.
我并没有因为目前的我能做的另一件事如果我能拉动右杠杆或者设置正确的程序变得激动。
NIBCO swing check valves are available with an outside lever and weight. The lever and weight arrangement is used to maintain exterior control over disc movement.
尼伯科旋启式止回阀可配置外部操纵杆和压铁。操纵杆和压铁用于对阀瓣进行外部控制。
And in the charged atmosphere after this bail-out meddling politicians, as part-owners, would have a tempting lever over the Banks.
政客们的干预计划造成了非常紧张的气氛，所以股东们有躲避银行的倾向。
Dumbo the Flying Elephant takes riders over Fantasyland, and lever controls let them fly at their desired altitude.
小飞象带着骑手们飞跃奇幻世界，骑手们可以通过操控杆飞到他们想要到达的高度。
The lever and weight arrangement is used to maintain exterior control over disc movement.
操纵杆和压铁用于对阀瓣进行外部控制。
Third, the over-indebted segments of this global economy desperately need high growth in order to safely de-lever otherwise they can tip into highly disruptive debt traps.
第三，高负债的经济部门急需高速经济增长，以求安全地降低债务负担。
Standard type snap over hinged lever and roller actuators are available in choice of two pivot positions.
标准对铰链杠杆和辊式管理器，可在两个枢纽位置的选择。
Standard type snap over hinged lever and roller actuators are available in choice of two pivot positions.
标准对铰链杠杆和辊式管理器，可在两个枢纽位置的选择。
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