植被根系作用力及作用范围有限；

The action range and effort of root system is limited;

企业通过其战略能对这五种作用力施加影响。

Enterprises can exert one's influence on these five kinds of effort through their strategy.

如果这协同作用力够强，它甚至在你觉得生病前就会歼灭这感染。

If this coordinated effort is strong enough, it'll wipe out the infection before you even notice it.

磁极之间的相互作用力很强。

The interaction force between magnetic poles is very strong.

科学家研究天体之间的重力作用力。

Scientists study the gravitational forces between celestial bodies.

走路时，地面对你的脚施加反作用力。

When you walk, the ground exerts a reaction force on your feet.

当你推墙时，墙也会对你施加反作用力。

When you push the wall, the wall also exerts a reaction force on you.

坐在椅子上时，椅子对你施加反作用力。

When you sit on a chair, the chair exerts a reaction force on you.

游泳时，你用力划水，水对你产生反作用力。

When you swim, you push the water, and the water exerts a reaction force on you.

火箭发射时，燃料燃烧产生的反作用力推动火箭上升。

When a rocket launches, the reaction force from the burning fuel propels it upward.