sag 美 /sæɡ; sɑːɡ/
v. （尤指由于承重或受压）中间下垂，下凹；减弱；（身体某部位）松弛；萎靡；衰退，下跌
n. （虚弱或重压引起的）下弯，下垂；下垂度；（尤指暂时的）下降，萧条
Your skin starts to sag as you get older.
人老了，皮肤就会慢慢松弛
Weight has caused the sag.
承重导致下垂
sage 美 /seɪdʒ/
n. 圣人；贤人；哲人；鼠尾草
Not everybody is a sage. Who can be entirely free from error?
人非圣贤，孰能无过?
saga 美 /ˈsɑːɡə/
n. 萨迦，冒险故事，英雄事迹，传说；长篇故事；一连串的事件
Juan sat quietly through the telling of this saga.
胡安安静地坐着听完了这个长篇故事
The front page is devoted to the continuing saga of the hijack.
头版是对劫持事件的连续报道