根据物理定律，弹性是指展现弹力的能力。

According to the laws of physics, resilience is the ability to demonstrate the quality of elasticity.

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裤腿的底部是有弹力的，有可调节的维可牢带。

The leg bottoms are elasticized and have Velcro TAB adjusters.

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苔丝象一个有弹力的球似的，一下子就从他身旁跳开了。

Tess sprang like an elastic ball from his side to her feet.

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But if I'm accelerating, the force exerted by the spring and therefore, the needle the weighing machine reads is m.

但是如果我在加速运动,那么弹簧的弹力,也就是称重机上指针的读数就是 m

耶鲁公开课 - 基础物理课程节选