How to say "需持续添入新药" (xū chí xù tiān rù xīn yào) in Chinese dialogue

chítiānxīnyào

we must continuously add fresh ingredients.

Grammar Patterns
INTERACTIVE SCRIPT TIMELINE
LINE 0104:22
wèi
bǎo
jiān
yào
xiào
biàn

To maintain the medicinal potency the entire time,

LINE 0204:25
PLAYING SCENE
chí
tiān
xīn
yào

we must continuously add fresh ingredients.

LINE 0304:28
cháng
shòu寿

Xu Changshou,

Show Information
Source MediaTV Series
Season & EpisodeS1 E14
Timestamp04:25
TMDB ID272715