你们能想象这个场景吗？有什么问题吗？

You got the picture here? Any questions on that?

youdao

大声点。，lewin：，So, speak, up。，我们可以尝试用，机械能守恒定律吗？，这样用有什么问题吗？

LEWIN Shall we try the conservation of mechanical energy Is there anything wrong with that?

youdao

你能帮我做作业吗？可以，有什么问题吗？

Can you help me with my homework? Sure. What's the problem?

youdao

你能帮我做作业吗？可以，有什么问题吗？

Can you help me with my homework? Sure. What's the problem?

youdao