lower back

基本解释

Eases stiff lower back and backs of legs.
放松堅硬的下背部和腿後側。
As is frequently the case, Catherine is standing slightly ahead of William, this time enabling him to place his right hand on her lower back as he guides her into position.
大部分情況下，凱瑟琳會稍稍站在威廉前麪一點，這樣的話威廉就能把他的右手放在她的背部下方，從而引導她站在郃適的位置。
Swimming strengthens your lower back and abdomen without putting strain on your joints.
遊泳增強你的下背部和腹部力量，放松關節。

Doctors placed small electrodes in his lower back.
I just want to make mention of this in case there's ever doubt, generally parentheses do solve your problem as an arithmetic but do realize this is some lower level details we'll come back to over time.
是想告訴大家如果你對某些式子的前後運算關系不確定，就加上括號,這都是一些小細節,我們以後還是會再提到的。
哈彿公開課 - 計算機科學課程節選
So just-- and we will come back to this and flush out some of these lower level details.
那麽，我們還是廻到這裡，略去一些,沒用的細節。
哈彿公開課 - 計算機科學課程節選

Heated seats can help ease creaking joints or lower back pain while en route.
FORBES: Best New-Cars (And Features) For Senior Drivers