Some steps that have to be suspended (4,6)
I believe the answer is:
rope ladder
'some steps that have to be suspended' is the definition.
'rope ladder' can be an answer for 'some steps' (rope ladder is a kind of steps). I am unsure of the rest of the definition.
'some steps' is the wordplay.
'some' becomes 'rope' (I can't explain this - if you can you should give a lot more credence to this answer).
'steps' becomes 'ladder' (ladder is a kind of steps).
'rope'+'ladder'='ROPE-LADDER'
Can you help me to learn more?
(Other definitions for rope ladder that I've seen before include "Something to get you down" , "etrier" , "not a stiff route to the top" , "Shaky steps" .)