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While we may call it the 'First secret,' it is not really a secret, just something that not too many people can pinpoint.

可以说这也许是“第一个秘密”，其实这也并不是什么密秘，只是这些事很多人都不会明确的说出来罢了。

youdao

While the study is not the first to test a cancer-killing viral therapy, it is the first to thoroughly document the behavior of the virus in patients' biopsy tissue.

虽然这项研究并不是第一次测试抗癌病毒疗法，但这是第一次完整记录此类病毒在患者病变组织中的行为特征。

youdao

While not the first Final Fantasy MMO, it does look like the most ambitious.

FORBES: 15 MMORPGs To Keep An Eye On In 2013

The potential of a skill good guy being in the right place at the right time, while not being the first killed in an ambush attack, is highly unlikely.

FORBES: Searching For Hard Data On Guns And Violence

While the Challenger 300 was not the first super-midsize jet, it has dominated the category since it was first delivered in 2004.

FORBES: Business Jet Review: Challenger 300 Is Putting the 'Super' In The Super Midsize Jet Category