一目了然

The number one; single; a; as soon as; entire; whole; all; a "one" radical in Chinese characters; also used for clarity when spelling out numbers.

Eye; to look; to see; item; section; list; catalogue; order (taxonomy); title; name; mesh; leader.

Particle indicating completed action or change of state; to finish; to understand; completely; to become clear.

correct; right; so; thus; like this; -ly; yes; certainly; pledge; promise; burn; agree