To overcome the difficulty of unstability of orebody and surrounding rock, the test of flat-back cut-and-fill drift mining is carried out.
针对凡口铅锌矿狮岭顶板矿体和围岩极不稳固的牲，进行了机械化上向进路分层充填采矿工艺的试验研究。
The risk of severe back problems and twisted or broken ankles is three times higher for a high heel wearer than for a flat shoe wearer.
穿高跟鞋的人出现严重的背部问题、扭伤或脚踝骨折的风险，比穿平底鞋的人高出三倍。
She injured her spine in a fall and a doctor told her to lie flat on her back for a month so it can mend.
她摔伤了脊椎，医生让她平躺一个月以便恢复。
Then, after I finally got back on the motorway, I developed a flat.
后来，等我终于回到公路上时，我有一个轮胎瘪了。
She's been flat on her back for over a week now.
她卧病有一个多星期了。
He then keeled over and fell flat on his back.
然后他就倒下了，仰面朝天。
I stumbled sideways before landing flat on my back, much to the amusement of the rest of the guys.
我向侧面绊了一下，然后仰面摔倒了，这让其余人乐不可支。
The torn portion of the canvas had to be gently coaxed back to its flat state, otherwise it would return to the distortion left by the accident.
画布撕裂的部分要小心地恢复到平整的状态，否则它将会恢复到由于事故造成的扭曲的状态。
The best way I found to stop the cramp is to stand up keep your foot flat then push your ankle back and your knee forward.
我发现阻止抽筋最好的办法就是站起来，保持脚平放，然后向后推你的踝关节，向前推你的膝关节。
The best way I found to stop the cramp is to stand up, keep your foot flat, then push your ankle back and your knee forward.
我发现阻止抽筋最好的办法就是站起来，保持脚平放，然后向后推你的踝关节，向前推你的膝关节。
Start as shown with the arms extended, back flat, legs fully extended and the balls of the feet on the Swiss ball.
开始动作如图所示：两臂伸直，背部保持平直，两腿充分蹬伸，脚掌置于健身球的球体之上。
Hindsight is wonderful: from the walkway to my flat, I gaze out at the back end of a superstore atop the old waterway, and mourn for it.
事后回想是如此奇妙：从人行道到我的公寓，我向外注视矗立于旧河道之上的超级市场的后身，默默的追忆昔日运河。
Lean on the ball as shown, keep the back flat or maintain its natural curve, with the legs straight.
身体俯卧于球体之上，动作如图所示。背部保持正直或保持自然弯曲状态，腿部伸直。
Lie on your back, feet flat on the floor, knees bent, hands at your sides.
整个背贴着躺在地上，脚板放平在地板上，两手放在身体两侧。
FLAT on its back, feeble and growing weaker, the rich world's economy is in a sorry state.
发达国家的经济状况正处在一个尴尬的境地：看似平稳，但背后却是越来越脆弱和疲软。
Lie on your back with your knees bent and feet flat on the floor.
背部着地，两膝弯曲，足平放于地面。
So I lay for hours in my bed, flat on my back with my eyes closed.
于是我长时间平躺在床上，紧闭双眼。
The blog also said the new iPad will have a flat back — the current iPad's back is curved — and is thinner by 0.12 inch.
这个博客还说新的iPad背面是扁平的(目前这款的背面有弧度)，而且还薄了0.12英寸。
Fiona: '... and when I got back to the car, the back tyre was flat and so... '.
费盎娜：“……当我回到车里的时候，我发现车胎没气了，所以……”。
Work with your feet flat on the floor and your back against the chair.
工作时你的脚应该平放在地板上，而背部要靠在椅子上。
US markets also joined in, starting the day strongly, before slipping back to close largely flat but ending a long streak of losses.
美国市场也加入了这次行情，当天强力开市，刚刚恢复到差不多平盘，不过关键是结束了长期的下跌。
They have been blamed for a range of health problems from bunions to back pain - whereas flat ballet pumps are much better for you, right?
他们造成了一系列的健康问题，从拇趾囊肿到背部的疼痛——所以，平底的芭蕾舞鞋更适合你，对吧？
As the countdown draws closer, have some quiet drinks back at your flat.
在倒计时越来越近时，回到你的公寓来点饮料。
The car unfolds with the push of a button, then folds flat and slides back into the phone-sized remote control.
按下按钮，车子就会展开，再按下，就会折叠放平，并滑回电话大小的遥控器。
The naked man then tried to get back into the flat in the town of la Verriere west of Paris, population 6000.
此后，该男子设法搬回位于巴黎西部拉维里埃地区的公寓，当地人口约6000人。
Predicting how fast a person will be jogging two years hence is tricky, especially when that person is currently flat on his back in a hospital's intensive-care unit.
预测一个人在接下来的两年里跑步能有多快极其困难的，尤其是当这个人现在正躺在一家医院的重症监护病房的时候。
As we headed back to Nicolas's car, we noticed a flat tire.
当我们走回尼可拉斯的汽车时，发现有一个轮胎瘪了。
She kicked off the plan during the family's Easter break in the Caribbean that left injured soccer idol Becks flat on his back.
这个计划始于他们复活节在加勒比海的假期，受伤了的足球偶像贝克·汉姆只能在床上度日。
"She's taller than me," says Rosie, and she lies flat on her back, arms outstretched, to demonstrate the exceptional height of the mermaid with her weedy tail.
“她比我还高呀，”罗西说道，美人鱼平躺在海滩上，手臂伸出，向人们这展示着杂草尾美人鱼特殊的风采。
"She's taller than me," says Rosie, and she lies flat on her back, arms outstretched, to demonstrate the exceptional height of the mermaid with her weedy tail.
“她比我还高呀，”罗西说道，美人鱼平躺在海滩上，手臂伸出，向人们这展示着杂草尾美人鱼特殊的风采。
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