Collins Chinese Dictionary Plus (3rd edition), 2011:
composure [kəmˈpəuʒər]
n
[u]
[of person] 镇(鎮)静(靜) zhènjìng
- to keep/lose one's composure
保持/不再镇(鎮)静(靜) bǎochí/bùzài zhènjìng
- to regain one's composure
恢复(復)镇(鎮)静(靜) huīfù zhènjìng
在这些条目还发现'composure'：
在英文解释里：
aplomb
- calmly
- cool head
- coolness
- dignity
- equanimity
- get your head together
- go to pieces
- head
- inner poise
- lose control
- phlegm
- presence of mind
- pull yourself together
- sangfroid
- self-possession
中文：