对许多人来说，一个问题是明确的：放血疗法是一个很好的医疗手段。

For many, one issue was clear: bloodletting was a sound medical procedure.

youdao

对许多人来说，一个问题是明确的：放血疗法是一个很好的医疗手段。

For many, one issue was clear: bloodletting was a sound medical procedure.

youdao