willingness to act or take the lead on one's own; drive or spirit of initiative

The largest artery in the body, which carries oxygenated blood from the left ventricle to all organs and parts of the body; also called [[大动脉|大動脈|da4 dong4 mai4]]

The right or power to take action on one's own; an advantageous position that allows one to control a situation or lead a process.

a verb form or sentence pattern where the subject performs the action of the verb; also called [[主动句|主動句|zhu3 dong4 ju4]]

a sentence pattern where the grammatical subject performs the action of the verb

type of immunity that results from the production of antibodies by the immune system in response to the presence of an antigen