You use ultimate to describe the original source or cause of something.
Plants are the ultimate source of all foodstuffs.
植物是所有食物的最终来源。
You use ultimate to describe the most important or powerful thing of a particular kind.
most important , highest
My experience as player, coach and manager has prepared me for this ultimate challenge.
做球员、教练和球队经纪人的经历锻炼了我,使我能够应对这一终极挑战。
the ultimate power of the central government.
中央政府的终极权力。
Of course, the ultimate authority remained the presidency.
当然,总统拥有最高权威。
You use ultimate to describe the most extreme and unpleasant example of a particular thing.
Bringing back the death penalty would be the ultimate abuse of human rights.
恢复死刑将是对人权最极端、最恶劣的践踏。
Treachery was the ultimate sin.
背叛曾是弥天大罪。
You use ultimate to describe the best possible example of a particular thing.
Experience the ultimate adventure!
去体验最刺激的冒险吧!
the ultimate in
The ultimate in something is the best or most advanced example of it.
Ballet is the ultimate in human movement.
芭蕾舞是人类动作的至美。
This hotel is the ultimate in luxury.
这家酒店为豪华之典范。