be present at 出席 ; 在席 ; 到场
be present at a meeting 出席会议 ; 莅会
to be present 出席 ; 在场
be present in 存在于
to be present at 参加 ; 出席
be present at the meeting 出席会议
be present at an event 露面 ; 在场
be present as 以……形式存在
Several different species of coral can be present in the different colonies that form the reef structure.
VOA: special.2010.08.10
You could use PCR to do that because if you amplify a gene in PCR, that gene had to be present from the beginning.
你可以用PCR技术来鉴定,因为如果你能用PCR扩增某一段基因,说明它从一开始就肯定是存在的
when you allow yourself to be present in situations and be surprised from them, you know.
那是当你把自己放在一种情境下,让自己感到惊奇的时候。
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