Radical:

meaning for shí:

  • - to know
  • - knowledge
  • - Taiwan pr. [shi4]

meaning for zhì:

  • - to record
  • - to write a footnote

ránér然而
lìngyǒu另有
xǔduōrén许多人
réngrán仍然
méi
chéngxīn成心
shí
dào
jiànkāng健康
yǐnshí饮食
de
zhòngyàoxìng重要性

But there are still many people who haven't realized the importance of healthy diet.