适可而止

to stop before going too far (idiom); to stop while one can / don't overdo it / stop while you're ahead

can / may / able to / to approve / to permit / to suit / (particle used for emphasis) certainly / very

used in 可汗[ke4 han2]

and / as well as / and so / but (not) / yet (not) / (indicates causal relation) / (indicates change of state) / (indicates contrast)

to stop / to prohibit / until / only

see 李适[Li3 Kuo4]

surname Shi

to fit / suitable / proper / just (now) / comfortable / well / to go / to follow or pursue