内生的

endogenous

see 的士[di1 shi4]

really and truly

of; ~'s (possessive particle) / (used after an attribute) / (used to form a nominal expression) / (used at the end of a declarative sentence for emphasis) / also pr. [di4] or [di5] in poetry and songs

(bound form) bull's-eye; target

inside / inner / internal / within / interior

to be born / to give birth / life / to grow / raw / uncooked / student