1.levelheadedness  

頭的英語翻譯：

beginning or end; cobbra; conk; crumpet; end; first; garret; hair; head
leading; nob; noddle; pate; sconce; side; top; twopenny
【醫(yī)】 capita; caput; cephal-; cephalo-; head; kephal-; kephalo-

腦的英語翻譯：

brain; encephalon; pericranium; cerebrum
【醫(yī)】 brain; encephalo; encephalon

冷靜的英語翻譯：

calmness; dispassion; imperturbability; self-possession