1.
an arch with a straight horizontal extrados and a slightly arched intrados.
一种拱背水平、拱的内面有个轻微弯曲的拱形。
2.
The upper or exterior curve of an arch.
拱背线拱顶上面或外缘的曲形线
3.
an arch with mutually supporting voussoirs that has a straight horizontal extrados and intrados.
有水平拱背和水平的内弧面的互相支撑的拱石的拱。
4.
When the animals were roused, there was a paroxysmal cough with the back arched.
动物们惊起时，则有发作性咳嗽和拱背。
5.
TWO NEW SPECIES OF GENUS LORDIPHOSA(DIPTERA,DROSOPHILIDAE)
拱背果蝇属二新种记述(双翅目,果蝇科)
6.
THREE NEW SPECIES OF NICRICOLOR SPECIES-GROUP OF DROSOPHILA(LORDIPHOSA) (DIPTERA:DROSOPHILIDAE)
黑色拱背果蝇种组三新种记述(双翅目:果蝇科)
7.
One flares its wings and arches its back in a dramatic threat display to relieve the tension of crowding.
有一只丹顶鹤展翅拱背，摆出威吓的姿态以纾解拥挤的压力。
8.
To cause(the back) to arch like that of a hog.
像猪那样地拱起（背）
9.
jump vertically, with legs stiff and back arched, as of horses.
垂直跳，腿僵直，后背拱起。
10.
The cat arched its back when it saw the dog.
那猫看见狗时就拱起了背.
11.
He is hunched over his cup, dissatisfied.
他拱着背，手中拿着杯子，自怨自艾。
12.
Faults: Weak or slack back; roached back; sloping topline.
缺点（合格）后躯看上去瘦削并且背部松弛；背部拱形状；背线倾斜。
13.
He might be forty years old; he stooped a little in walking.
他大概有40岁；走起路来，有点儿拱腰曲背。
14.
Continue rolling the cover downward and engage the hogrings attaching the seatback cover to the seatback cushion support wires.
继续向下旋转座椅背盖，接上固定座椅背盖到座椅背垫支架线的拱起环。
15.
No, aboriginals have poor parodies of Eofol or Nighon horses, with humps on their backs.
不，土著马只是拱着背，是伊欧弗和尼贡马匹的拙劣模仿。
16.
While the boy hung there, his legs braced, his body arched against the strai
戴维还是照样站着，双腿稳稳地撑着，拱起后背使劲顶住。
17.
An arched structure erected over the deck of a ship as protection from heavy seas.
龟背甲板船的甲板上拱形的结构，可保护船在狂暴的海上航行
18.
The image is of a horse arching its back to try to throw a rider.
其形象是拱起马背试图将骑马者摔下马的一匹马。