So it's a very solid, very well thought-out, very well grounded system, and it was a bottom-up system, and that was very important with this work, from the bottom up to secure this.
目前已发展成为一套相当可靠，缜密 以及十分稳定的体系。 这也是一个至下而上的系统， 这对于这项工作非常关键。 至下而上来确保体系的完善。