The cells in the ovaries of frogs are very tightly held together by connective tissue.

在青蛙的卵巢里的细胞通过结缔组织紧密的链接在一起。

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The body's pH levels may change slightly as a result of eating some foods, but will remain in the tightly held range of 7.35-7.45.

食用某些食物可能会导致身体的PH值轻微改变，但是仍将紧紧地维持在7.35到7.45之间。

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Keep the 'confidential' confidential. Whether it's tightly held corporate news or a personal confidence, you'll gain trust and respect by practicing discretion.

对‘绝密的事情’要保密。无论是涉及企业内幕还是个人隐私，守口如瓶这样的谨慎行为将让你获得信任和尊重。

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It makes a lot of sense when we look at it energetically, because if we think about a 1 s core electron, that's going to be held really, really tightly to the nucleus.

从能量的观点来看这是非常合理的，因为如果我们考虑一下，1，s，芯电子，它会被原子核束缚得非常非常紧。

麻省理工公开课 - 化学原理课程节选

They're very deep and held very tightly to the nucleus, so we can often lump them together and instead of writing them all out separately, 3s1 we can just write the equivalent noble gas that has that configuration.

它们非常深,被原子核吸得很紧，所以我们通常可以把它们混在一起,而不是把它们写开，我们可以写出氖然后3s1所以,或者任何的一个。

麻省理工公开课 - 化学原理课程节选

Bank shares in Japan are particularly tightly held, making it hard for outsiders to apply pressure.

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Historically, the concept of offensive IW has been a tightly held secret even within the United States itself.

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But this is a fairly tightly held process in a relatively small circle.

WHITEHOUSE: Press Briefing