Those that observe them for no more than a moment or so find it difficult to follow their activities, as they seem to disappear suddenly because of their speed.

因此，它被称为马达加斯加被的“飞行天使”， 因为它们的速度非常快，很快就消失了，因此看到它们也不会超过一时刻或难以观察它们的活动。

youdao

Here they seem to disappear and are rarely seen, living in rocky outcrops and under fallen tree branches and debris on the forest floor for the first three years of their life.

在这儿他们似乎消失了而且很难见到，这是因为他们生活在地表岩层落叶下面，他们将在这里度过3年的生命。

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if the negotiations are not given a deadline then everyone fears that they will disappear down a WTO-style rabbit hole with endless rounds of negotiations that never seem to reach a conclusion.

如果没有设定一个讨论期限，那大家就会担心会陷入一个WTO式的无底洞，没完没了的讨论，还总得不出个结论。

youdao

They seem to disappear from cool waters of the Atlantic and Pacific Oceans.

VOA: special.2009.06.16

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When one says they made very high risk to disappear, it does seem foolish, but when concealed by the complexity of the transactions, it is understandable that the Fed would not have seen it.

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Pronation and plantar fascitis seem to disappear when you start using your feet the way they were designed to be used.

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