His presence no longer signified.
他在不在场已不重要。
John's presence caused her considerable discomfort.
约翰在场使她颇为尴尬。
The somewhat acid flavour is caused by the presence of lactic acid.
略有的酸味是由乳酸的存在造成的。
I'm glad to see that you've decided to honour us with your presence !
很高兴看到你已决定大驾光临！
The managing director's presence inhibited them from airing their problems.
总经理的在场使他们不便畅谈他们的问题。
He said they were opposed to what he described as the presence of alien forces in the region.
他说他们反对他所描述的在该地区有外国军队的存在。
Glaser says the widespread presence of pottery confirms the soil's human origins.
格拉泽说，陶器的广泛存在证实了土壤的人类起源。
Be careful of your behaviours in the presence of others, or you will be sorry for it.
在其他人面前注意你的举止，否则你会后悔的。
Install a CO detector to alert you of the presence of the deadly, odorless, colorless gas.
安装一氧化碳检测器来警告是否存在这种致命的、无色无味的气体。
The spruce community is not substantially affected by either the presence or absence of moose.
无论驼鹿的存在与否，云杉群落都不会受到实质性的影响。
You are supposed to look at a passerby just enough to show that you are aware of his presence.
当你观察一个过路人的时候，能够表明你意识到他的存在就可以了。
Military presence and its impact on Japanese residents have been a thorny issue over the years.
多年来，军事存在及其对日本居民的影响一直是一个棘手的问题。
The essential condition for the decay of the vacuum is the presence of an intense electric field.
真空衰变的基本条件是存在强电场。
Her theory about uranium would have explained the presence of element 43 in her team's ore sample.
她关于铀的理论可以解释她的团队的矿石样本中43号元素的存在。
Eliot, a man fascinated by the "presence" of the past, wrote the most innovative poetry of his time.
艾略特对过去的“存在”着迷，写下了他那个时代最具创新性的诗歌。
For today's youth, books, newspapers and magazines have less and less of a presence in their daily lives.
对于今天的年轻人来说，书籍、报纸和杂志在他们的日常生活中存在感越来越低。
They can detect ultrasound; this means that when a bat approaches, the moth can detect the bat's presence.
它们可以探测到超声波；这意味着当蝙蝠靠近，飞蛾可以察觉到它的存在。
The sounds made as each wing is opened carry extremely well over distance and advertise his presence widely.
它逐一张开翅膀时发出的声响能够极好地传送到远距离之外，铺天盖地地宣传着它的存在。
Although the situation was terrible, she felt that the presence of thousands of bystanders was a kind of shelter.
此情此景虽然可怕，但她却感到这数以千计的旁观者的存在倒是一种庇护。
Postmortem analysis showed the presence of an as yet unidentified virus, as well as evidence of a know bacterial toxin.
尸检分析显示出存在一种未知的病毒，以及一种已知的有毒细菌的证据。
The development of complex life on Earth depended on the presence of bacteria that could be consumed by larger organisms.
地球上复杂生命的发展依赖于细菌的存在，而细菌可以被更大的有机体所吞噬。
Researchers have come to realize that being humble generally indicates the presence of deeply admirable personal qualities.
研究人员已经意识到，谦虚通常标志着非常令人钦佩的个人品质的存在。
They seemed to be resentful of our presence there.
他们好像对我们在那里露面很生气。
The document was signed in the presence of two witnesses.
本文件由两位证人见证签署。
The supervisor's presence militated against a relaxed atmosphere.
监管的出现驱散了松懈的气氛。
Her presence was just one more goad to Joanna's unravelling nerves.
她的出现只是对乔安娜几近崩溃的神经的又一次刺激。
The test can identify the presence of abnormalities in the unborn child.
这项化验能鉴定胎儿是否有不正常现象。
Stephen noticed that the people around him looked cheered by his presence.
斯蒂芬注意到周围的人因为他的到场而振奋起来。
He stopped at the door, waiting in vain for her to acknowledge his presence.
他停在门口，徒然地等着她跟自己打招呼。
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