sag
v
(-gg-) [I]
1 sink or curve down in the middle under weight or pressure (因负重或受压)向下凹或中间下陷
a sagging roof 下陷的屋顶
The tent began to sag as the canvas became wet. 帐篷因帆布湿了中间有些下坠.
2 hang loosely or unevenly 松弛或不整齐地悬著
old torn curtains sagging at one end 垂在一端的破旧窗帘
Your skin starts to sag as you get older. 人一老皮肤就松弛了. 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 床垫过於松弛
a sag in the seat of the chair 椅子座位部分的凹陷.
OK. We can get some more tomorrow. We should finish the floor now. Can you take the other end of this piece of wood? Now you have to pull it to make the surface smooth like that.