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presence

英['prezns]美['prɛzns]

n.
1.[U]出席；在场；存在
2.[U]【褒】仪态，（尤指）风度
3.[C]（似乎）在场的人或事物
4.（通常presence）（执行某种使命的）一群在场人员（如军警等）

同：	[n.] bearing, comportment, front, mien
反：	[n.] absence

The presence of a large density of contaminant causes anomalous increases in the diode current with increasing reverse bias.
大量沾污也会使二级管电流随反向偏压的增加而呈现反常的增大。收藏
Another milestone for our strategic presence in the enormous, up-and-coming China market in the new millennium.
也是踏入新世纪，我们在这迅速崛起、潜力无可限量的中国大陆市场的策略性发展上一个重要的里程碑。收藏
Litmus paper can be used as an indicator of the presence of acid in a solution.
石蕊试纸可用以测试溶液是否含酸。收藏
Bertha was astonished that he should wish to see her, and a little annoyed, for now of all times his presence would be importunate
伯莎为他居然会想看望她而吃惊，并且有点儿气恼，因为他的出现如今较之任何时候都更令她憎厌。收藏
“Did Larry Moody, in your presence, make any sort of advances toward Miss Cole ?”
“拉里·穆迪当着你的面是否对科尔小姐有什么挑逗的言语或行为？”收藏

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the state of being present; current existence
- he tested for the presence of radon
[反] absence
the immediate proximity of someone or something
- she blushed in his presence
- he sensed the presence of danger
- he was well behaved in front of company
[同] front, presence

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