Knowledge outside the day's work is regarded by most men as a gewgaw. 大部分人把日常工作以外的一切知识统统当作花哨无用的玩意儿。
gewgaw
[ noun ] cheap showy jewelry or ornament on clothing <noun.artifact>
Gewgaw \Gew"gaw\, n. [OE. gigawe, gugawe, gewgaude, prob. the same word as OE. givegove gewgaw, apparently a reduplicated form fr. AS. gifan to give; cf. also F. joujou plaything, and E. gaud, n. See {Give}, and cf. {Giffgaff}.] A showy trifle; a toy; a splendid plaything; a pretty but worthless bauble.