"The best way to do something" 的短语是 "the optimal way to do something"。
"Optimal" 是由拉丁语 "optimus" 演变而来，意为 "最佳的"。
例句：
"What is the optimal way to lose weight?" (最佳减肥方式是什么？)
"I'm trying to find the optimal way to study for this exam." (我正在尝试找到为这场考试学习的最佳方式。)
"The optimal way to cook this dish is to use a pressure cooker." (烹饪这道菜的最佳方式是使用高压锅。)