是可忍，孰不可忍

if this can be tolerated, what cannot? (idiom) / enough is enough

variant of 是[shi4] / (used in given names)

to be (followed by substantives only) / correct; right; true / (respectful acknowledgement of a command) very well / (adverb for emphatic assertion)

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

used in 可汗[ke4 han2]

to bear / to endure / to tolerate / to restrain oneself

who / which / what

no; not so / (bound form) not; un-

cannot / should not / must not

cannot; should not; must not