не вживати жодних заходів (none of the TCCs can afford to sit on their hands)
all for one and one for all / one for all and all for one
sit on one's tail
sit in one’s saddle
hands off!
hands up!
join hands
hands-on performance examinations
sink with all hands aboard
change hands
sit on the fence
special interest target (SIT)
sit atop the armor
sit
sit down
sit-down war
sit on the fence / be on the fence (in the Ukraine war)
one-way UAV / one-way attack UAV (OWA UAV)
commission, to resign one’s commission
complete one's tour
force one's way
hoist / strike one's flag
inch one's way forward
one day’s supply
one-man turret
one-piece
one-piece base
one-shot weapon
one-time report (on status of equipment etc.)
one-time report
one-up
overstay one's leave
prescribed range (running-time on one fuelling)