However, the professors need not worry so much.

然而，教授们不用太担心。

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However, the users need not worry as to how they are authenticated.

然而，用户不必担心如何进行身份验证。

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However, you need not worry that younger children will break the sturdy dino and they likely will engage with the intuitiveness of the TrackBall.

不过，你不用担心，年轻的孩子们将打破坚固的恐龙，他们很可能将与轨迹球的直观搞。

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