sag
v
(-gg-) [I]
1 sink or curve down in the middle under weight or pressure (因負重或受壓)向下凹或中間下陷
a sagging roof 下陷的屋頂
The tent began to sag as the canvas became wet. 帳篷因帆布濕了中間有些下墜.
2 hang loosely or unevenly 松弛或不整齊地懸著
old torn curtains sagging at one end 垂在一端的破舊窗簾
Your skin starts to sag as you get older. 人一老皮膚就松弛了. sag, n [U, sing]
extent to which sth sags; sagging 下陷或松弛的程度; 下陷或松弛
too much sag in the mattress 床墊過於松弛
a sag in the seat of the chair 椅子座位部分的凹陷.