translation.en: There's a lot of research and a lot of failure, trial and error -- I guess, more error -- so we don't always get it right, and it takes a while for us to be able to explain that to people.
translation.zh: 要做许多研究 每试验一道菜 都经历失败 尝试 错误 错误占大多数 我们并不总是一帆风顺 要花上一些功夫 向人们解释