We did many things here, such as playing basketball, playing tennis, skipping rope and so on.
我们在这里做了很多事情,比如打篮球、打网球、跳绳等。
Our products are mainly used for the production of bias tyres; convey belt, fishing net, rope and so on.
我们的产品主要应用于斜交轮胎、传送带、渔网、绳索及安全带的生产。
We skip rope, play cards and ball and so on.
我们跳绳,打牌和球等等。
So, massless bodies will always have, like a massless rope, equal and opposite forces on the two ends.
所以无质量的物体,比如这个绳子,两边所受的力永远都相等
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