衰之以属 shuāi zhī yǐ shǔ

DEFINITIONS

  1. to treat a debility according to its nature

CHARACTERS

衰 shuāi decline, falter, decrease; weaken
之 zhī marks preceding phrase as modifier of following phrase; it, him her, them; go to
以 yǐ by means of; thereby, therefore; consider as; in order to
属 shǔ class, category, type; belong to