把孩子放在一个过于苛刻的环境里成长，在这个环境中，成功的渴望是父母强加在孩子身上的，而不是孩子内在的动力所为，这样长期以来会对孩子起反作用。他说。
Putting kids in overly rigid environments, where the desire to achieve is imposed by parents rather than coming from their own internal drive, can be counterproductive in the long-term, he said.
然而如果遇上足够强大的反作用力，经济动力将会迅速消失。
Yet economic momentum is quickly dissipated if it meets strong-enough counterforces.
“空气动力学”规定了由于绕流反作用在发射飞行器上存在的压力场和载荷。
"Aerodynamics" defines the pressure fields and loads that exist on a launch vehicle due to the reaction of ambient flow.
尾部对主要力（球体运动）的方向变化产生反作用，只是这种作用由于动力的影响而受到了延迟。
The tail reacts to that change of direction in the primary force (the ball moving), yet it is delayed due to the resistance of momentum.
反作用（二级）力：当物体反抗原始力的影响时，惯性和动力的效果便是反作用力。
Reacting ( Secondary ) Forces: the evidence of the effects of inertia or momentum in the body as it reacts to the influence of the Initiating Force.
蒸汽排放所产生的反作用力给火箭提供了动力。
The discharging steam provided the rocket with motive power.
蒸汽排放所产生的反作用力给火箭提供了动力。
The discharging steam provided the rocket with motive power.
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