要非常确定，请不要犹豫。

Be quite sure, don't hesitate.

youdao

不过，对绝大多数的人来说，要确定这一难以琢磨的数值的最合适的取值可能非常困难。

For most people, however, deciding on the elusive perfect number can be tough.

youdao

不过，对绝大多数的人来说，要确定这一难以琢磨的数值的最合适的取值可能非常困难。

For most people, however, deciding on the elusive perfect number can be tough.

youdao