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请按照下面的顺序学习并完成内容的打卡 Please study and complete the check-in content in the following order.
Finish the following blank 完成下面的填空
Force and reaction-force pair are in and in direction, acting on (same/different) objects, appear and disappear at the time, and of type of force.
Newton's 3rd law 打卡I accomplish 我完成了 提交 |