Don't raise your hopes too high, or you may be disappointed.

不要希望过高，否则你可能会失望的。

《牛津词典》

You may be disappointed, you know.

你可能会失望的，你知道。

youdao

You may be disappointed.

你可能会失望的。

youdao

However, some fans may be disappointed by the emphasis on fast action rather than intellectual depth.

BBC: The cast of Star Trek: Enterprise

In fact, many investors may be disappointed by the higher risk of stroke with Sapien.

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Those expecting the hottest new phones to make their appearance at the show may be disappointed.

NPR: Wireless Show Expected To Draw Crowds To Barcelona