Study National Aquatic Centre review, suggesting it should be preserved (6)
I believe the answer is:
canned
'be preserved' is the definition.
(similar in meaning)
'study national aquatic centre review' is the wordplay.
'study' becomes 'den' (term for a study or office).
'national aquatic centre' becomes 'nac' (this might be a standard abbreviation I've not previously seen).
'review' shows that the letters should be reversed in order.
'den'+'nac'='dennac'
'dennac' in reverse letter order is 'CANNED'.
'suggesting it should' acts as a link.
I am not very happy about this link. Some or all of it may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for canned that I've seen before include "Like dubbed laughter" , "preserved in containers" , "A lot of beer is" , "(Food) from tin; (programme) pre-recorded" , "Preserved in a tin" .)