down the middle的意思是：从中间平分的。
短语释义：
down-the-middle shot 中路球
down-the-middle thrust 中路突破 ; 中路冲破
down-the-middle lay-up 正面上篮
down-the-middle lay-up shot 从正面上篮 ; 从反面上篮
例句：
" But where that album sometimes seemed like a self-conscious attempt to diversify their sound, with a world-music vibe and U2-style sound effects, this time Coldplay have integrated the "Enoxification" (as they call it) into their own down-the-middle core: Check out the cascading choral vocals that augment Martin's soaring refrain on "Paradise.
Apple's approach means the market remains essentially cut down the middle - between the iTunes service, which works only on the iPod, and services which use a Windows Media format, essentially everyone else.