mecyxlarai lujvo

m1=x1 is the best/[least bad] among set/range t4 for x2 by standard x3.

Cf. mleca, xlali, traji, xagrai, xlamau, xlarai, xlame'a, zanrai.

In notes:

xagrai
t1=x1 is the best among set/range t4 for x2 by standard x3.
xlame'a
xl1=m1 is better/[less bad] than m2 for xl2 by standard xl3, by amount m4
zanrai
t1=z1 is most favourable among set/range t4 in property z2 according to standard z3.