不啻天淵

no less than from heaven to the abyss (idiom); differing widely / worlds apart / the gap couldn't be bigger

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

just as / no less than / like (sth momentous) / as good as / tantamount to

only (classical, usually follows negative or question words) / (not) just

day / sky / heaven

distance between two poles / poles apart

deep pool / deep / profound