Such opportunities should not be missed [lost, wasted].

这种机会不应错过。

《新英汉大辞典》

This is a tutorial that should not be missed.

这是一个超震撼型十分有价值的教程，不应错过。

youdao

The experience is exclusive and it should not be missed.

经验是排他性的，它不应错过。

youdao

The rooftop views and the leafy cloister with its gaggle of geese should not be missed.

BBC: A perfect day in Barcelona

The opportunity to continue and build on this success should not be missed.

UNESCO: UK National Commission for UNESCO :: UK National Commission for UNESCO response to DCMS World Heritage Policy Review Consultation

The startling sight of the submerged caldera, almost encircled by sheer lava-layered cliffs and topped by a dusting of towns, should not be missed.

BBC: Lonely Planet's top European seaside escapes