油然而生

arising involuntarily (idiom); spontaneous / to spring up unbidden (of emotion)

oil / fat / grease / petroleum / to apply tung oil, paint or varnish / oily / greasy / glib / cunning

correct / right / so / thus / like this / -ly

however / yet / but

however; yet; but

and / as well as / and so / but (not) / yet (not) / (indicates causal relation) / (indicates change of state) / (indicates contrast)

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