translation.en: And then we mounted a camera for controlling it, but quickly we saw that we would need a lot more weight at the bottom, so we had to take it back to the lab, and then we built a skin around it, we put batteries, remote controllers, and then we put it in the water and then we let it go in the water and see how well it would work,
translation.zh: 我们装了一架摄像机来控制它 但很快我们就发现 底部需要更多重量 所以我们只好把它拿回实验室 并给它装上外壳 我们装了电池，遥控器 然后我们把它放在水中，接着我们 让它在水中自由航行，看它工作的有多好