διφθέραι σταδιαῖαι τοῖς μεγέθεσιν → hides a stade in size, hides fastened together so as to cover a place an entire stadium in extent
calmly: P. and V. ἡσυχῆ, ἡσύχως, Ar. and V. ἀτρέμα, Ar. and P. ἀτρέμας, ἠρέμα.