Over time we got a little bit better at it, and we came up with this really sophisticated-looking rig with four scuba tanks and five regulators and all the right gas mixtures and all that good stuff.
但过了一阵，情况有了一点好转 我们搞出了这个看起来很是先进的装置 上面有四个气罐和五个调节器 还有合适的混合气体以及所有要用到的好东西