presence
/ˈprezəns/noun
mass noun
1- the state or fact of existing, occurring, or being present in a place or thing出席, 在场; 存在：
my presence in the flat made her happy
我来到公寓, 这使她很高兴
the presence of chlorine in the atmosphere
大气中氯气的存在
the memorial was unveiled in the presence of 24 veterans.
纪念碑揭幕时, 有24名老兵在场。
1.1
- count noun a person or thing that exists or is present in a place but is not seen在场但看不见的人（或物）：
the monks became aware of a strange presence.
和尚们意识到有奇怪的东西存在。
1.2
- in sing. a group of people, especially soldiers or police, stationed in a particular place驻扎部队; 驻扎的警力; 军事存在：
the USA would maintain a presence in the Indian Ocean region.
美国要在印度洋地区保持其军事存在。
1.3
- the impressive manner or appearance of a person仪表, 仪态; 风度; 气质：
Richard was not a big man but his presence was overwhelming
理查德不算高大, 但气质不凡
in sing. he has a real physical presence.他确实气宇轩昂。
短语
make one's presence felt
- have a strong and obvious effect or influence on others or on a situation引起别人注意自己的存在, 使自己对人（或形势）有强烈且明显的影响。
presence of mind
- the ability to remain calm and take quick, sensible action镇定自若, 遇事不慌：
he had the presence of mind to record the scene on video.
他镇定自若地用摄像机录下现场。
词源
Middle English: via Old French from Latin praesentia 'being at hand'， from the verb praeesse （see PRESENT1）.