τὸ δ' ἐξαίφνης τὸ ἐν ἀναισθήτῳ χρόνῳ διὰ μικρότητα ἐκστάν → suddenly refers to what has departed from its former condition in a time imperceptible because of its smallness
mūnĭfĭco: 1, v. a. munificus,
I to present with any thing: aliquem aliquā re, Lucr. 2, 625.