那匹马扭动并猛然弓背跃起，使得骑手摔下马。
The horse twisted and bucked and finally dismounted its rider.
毛驴看见蛇时，猛然弓背跃起。
深蹲时人们常犯的错误就是弓背。
Main thing people do wrong when doing is a squat is they bend from the back.
我记得木制椅子的弓背和转轴。
第一下弓背跃起就把骑手摔下来的马。
比如在科罗拉多红锈色的水中繁衍的弓背鲑。
The humpback chub, for example, thrived in the rust-red waters of theColorado.
这时，双手紧压地面，轻轻向后弓背，增加弧度。
Press down on the mat with your hands, gently increasing the arch in your back.
并且避免弓背。
我的这头牲口的弓背象一弯新月，迈步象骆驼一样缓慢。
当你弓背，这可能由于疲劳，但人们从中获得的信号是你缺乏兴趣。
You may be slouching because you're tired, but people may read it as a sign that you're not interested.
她叙述了一个案例，在这个案例中猛然弓背跃起的马的前腿被狠狠折断。
She states one case in which a bucking horse suffered a badly broken front leg.
得出屈膝屈髋的同时，低头、含胸、弓背团身技术优于传统团身技术的结论。
The study led to the conclusion that the traditional tucking technique can be improved by lowering the head, pulling in the chin and arching the back.
所有脱离缰绳的马：在队伍下白厅的时候，受惊的马弓背跃起成为最精彩的部分。
All the Pretty Horses: the panicked horse bucking as the procession went down Whitehall was a highlight.
航模、玩具飞机、玩具汽车、弓背、箭、健身圈、臂力棒、棒球练习器等多种体育用品；
Aeromodelling, aeroplane toys, car toys, arch, arrow, body-building loop, power twister, baseball exercise equipment and other sports goods;
弓背鲑非常适应浑浊红色的河水（这也是河名的出处）中的低可见度，并可以借以躲避天敌。
The chub were well adapted to the poor visibilitycreated by the thick, red water which gave the river its name, and depended onit to hide from predators.
通过体重改变、弓背、翘毛、腹泻等表现和肝脏、小肠、皮肤病理学检查观察GVHD ；
GVHD was assessed by signs of weight loss, ruffled fur, diarrhea and histologic changes of skin, liver and small intestines.
这只木蚁(氏弓背蚁)(Camponotusleonardi)处于被一种由真菌感染所引起的“死抓”剧痛之中。
This carpenter ant (Camponotus leonardi) is caught in the throes of a fungus-induced death grip.
研究了日本弓背蚁的社群生活史；结合室外观察和室内饲养方法，对日本弓背蚁社群生活史各阶段社会行为进行了初步研究。
Many social behaviours in each step of it′s colony life circle are investigated by observing the natual life and culturing the colony in lab.
随土层深度增加，若以棉花主茎垂直向下比喻为弓弦，则单作棉根干重的空间变化呈弓背形分布，而套作棉各土层根干重最大值出现的位点逐渐远离棉株。
The localities with maximum root dry weight in every layer of C distributed like a bow with vertical taproot as bowstring, and those of cotton in C-W were farther from cotton plant.
随土层深度增加，若以棉花主茎垂直向下比喻为弓弦，则单作棉根干重的空间变化呈弓背形分布，而套作棉各土层根干重最大值出现的位点逐渐远离棉株。
The localities with maximum root dry weight in every layer of C distributed like a bow with vertical taproot as bowstring, and those of cotton in C-W were farther from cotton plant.
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