come down to

可归结为

come across (also come over), come after, come after sb, come alive, come along, come apart, come around, come around (to sth), come at, come at sb, come away (from sth), come back, come before, come before sb/sth, come between, come between sb and sb, come by, come by sth, come down, come down on, come for, come forth, come forward, come from..., come home, come in, come in for, come into, come into acceptance, come into being, come into contact with, come into effect, come into force, come into one's own, come into operation, come into power, come into sth, come into use, come of, come of sth,