【经】 mother oil
former; original
【化】 ortho-
【医】 arch-; arche-; ortho-; pro-; prot-; proto-
accrue; crude; rawness; unripe; give birth to; grow; living; procreate
student
【医】 bio-
oil; petroleum
【化】 petroleum
【医】 coal oil; kerosene oil; mineral glycerin; petroleum; rock oil
【经】 crude oil; petrol; petroleum