scat·ter·brained /-ˌbrend/
(a.)注意力不集中的
scatterbrained
adj 1: lacking sense or discretion; "his rattlebrained crackpot
ideas"; "how rattlepated I am! I've forgotten what I
came for"- Glenway Westcott [syn: rattlebrained, rattlepated,
scatty]
2: absent-mindedly irresponsible; "he said I was too flighty to
be a good supervisor" [syn: flighty, head-in-the-clouds]