'When I first got on it I thought it would never work and at a slow speed it's almost impossible to keep upright.
当我第一次驾驶时，我认为它肯定是没办法上路的，而且速度会非常的慢，并且要走直线也是很难的。
The park said Tuesday that all its 19 dolphins have been on a low fat diet since late August, when they started failing to hit jumping targets and keep upright while treading water.(See photo)
该公园9月30日说，园内19只海豚在表演时总是无法跳跃到规定高度，游弋时躯体也经常与水面垂直，于是从8月底开始只给它们食用低脂肪食物。
Walking keeps you upright and enlists gravity to keep acids from splashing up the esophagus.
散步可以帮助你直立和获得地心重力的作用，去防止胃酸上溅到食道上。
If the centerboard is not weighted, like the fiberglass centerboards of many small sailboats, then sailors must keep the boat upright by positioning their own weight on the upwind side of the boat.
如果活动龙骨不带负重，例如许多小型帆船使用的玻璃纤维活动龙骨，那么水手们必须通过将他们自己的体重压在船只的逆风侧来保持船只直立。
In the few hours we spent together, I watched him position her gently in the restaurant booth and later in the back seat of his car, making sure to keep her upright and not to touch her private parts.
我们在一起呆了几个小时，我看到尼森轻轻把她放在餐厅座位上，后来又放到车上后座，保持她上体正直，并小心不去碰不该碰到的地方。
Perhaps it's because our visual system evolved to be overly sensitive to even slight departures from the horizontal, to help keep us upright.
可能是由于视觉系统进化，使得我们对些微高于水平面的物体过度敏感，以此帮助我们挺直腰杆。
Interspersed between them are short, curly fibres that work like tiny springs to keep the longer tufts upright while also giving a measure of cushioning.
又短又弯的纤维分散在表面，就像细小的弹簧一样，使得长一些线头一直挺立着，同时又产生一定的缓冲作用。
躯干保持向上。
It has an electromagnet at the base which allow to shift the weight and keep it in an upright position.
它的底部有一个电磁体，可以调整重心从而保持手机直立。
If the centerboard is weighted, then it also provides weight low in the water, like a keel, to help keep the boat upright (although not as much weight as a fixed keel can supply).
如果选用了带负重的活动龙骨，那么它和固定龙骨一样提供水下的重量负荷，以使得船只能够保持直立(尽管它无法提供和固定龙骨一样大的重量)。
For those of you who work in a desk setting all day, remember to sit upright and keep your lower back arched.
对于那些你谁的工作案头设置一整天，请记住坐在一身正气，让您的腰部拱。
You had to constantly adjust the position of your hand to keep the object upright.
你必须不断地调整你的手的位置以保持对象的垂直。
The tug nearly turned turtle twice, but I managed to keep her upright.
拖船两次都差点翻个儿，但我设法稳住了船身。
The railings serve as structural beams to keep the staircase upright, while two dampers help to prevent the staircase from vibrating under foot.
栏杆作为结构梁架，使楼梯保持直立，同时两个减震器有助于减轻脚下台阶的震动。
A rest shall be placed at the end of a row of books to keep them upright.
一排书的末端应放个支撑物以使书本保持直立。
Like the legs of a camera tripod, these bumps make an egg more stable and help keep it upright.
这些突起物就像照相机的三脚架，可以让鸡蛋更稳定，帮助它保持直立。
This is a classic control problem, in which a vehicle tries to keep a pole mounted on its top by a hinge upright by moving back and forth.
这是一个典型的控制问题，此中一辆汽车试图保持极安装在其顶部由一个铰链垂直移动来回。
To be safe, you should bring your seat backs to an upright position and keep your seat belts fastened during take-off and landing.
为了安全起见，在飞机起飞和着陆时，您应将座椅靠背调直，系好安全带。
By contrast, "Land animals - like ourselves - are always working to keep themselves upright and keep their shape," Mouritsen says, so our muscle fibers are thicker, tougher and firmer.
莫里特森说，相比之下，“陆地动物——比如我们人类——需要一直保持站立的姿态。”所以我们的肌肉纤维更密集、更强健、更结实。
Please keep your seat belt fastened and keep your seat in the upright position.
请系好安全带，并直立您的座椅背。
Keep your seat in upright position during take off.
起飞时请保持座椅呈直立状态。
Under the frequency of resonance, small particles which are in the bottom of an upright standing wave tube will rise and move to the node, or loop planes, and keep suspending there.
竖直放置的驻波管在共振频率下，位于其管底的微小颗粒群会在一定声压级下产生悬浮现象，即腾空而起，悬浮在波幅波节平面。
Chest harness - a harness used in conjunction with a seat harness to keep the body upright in case of a free fall (into a crevasse, for instance).
胸式安全带，用于连接座式安全带，以保证坠落时身体直立。也用于在携带重物下降时支撑身体。
The muscles that keep the pelvis upright, like a bowl, are located front and back.
使骨盆像碗一样保持端正的肌肉位于骨盆的前侧和后侧。
It would have required an experienced man to keep the top-heavy sled upright, and Hal was not such a man.
这时需要一个有经验的人来扶住头重脚轻的雪橇，可赫尔根本不是这样的人。
Do keep the battery upright when storing and changing.
电池存放和更换时保持电池朝上。
Basically, one should use five fingers to hold a Chinese writing brush and keep the shaft upright.
拿中国毛笔的方法一般是五指执笔法，笔杆要竖直。
After the basketball stand is well placed, the weight box which is filled with weights, such as concrete or stones, etc. can keep the basketball stand stable and upright.
篮球架现场立放好后，往配重箱内填入混凝土或石块等重物即可让篮球架稳固竖立。
After the basketball stand is well placed, the weight box which is filled with weights, such as concrete or stones, etc. can keep the basketball stand stable and upright.
篮球架现场立放好后，往配重箱内填入混凝土或石块等重物即可让篮球架稳固竖立。
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