I looked back through the hole but the boy had disappeared.
我又朝洞里望去，但小孩子杳无踪影。
"The drill hole is just a pinprick on an elephant's back," he said.
“钻井对于整个岩浆体来说只不过是大象背上的一个小针孔。”马施说。
Radio signals received from the galaxy's centre back up the black hole theory.
从该星系中心接收到的无线电信号证实了黑洞理论。
They saw a big hole in the back of the car.
看到汽车的后面有一个大洞。
There's a hole in the back of the cup.
杯子的后面有一个洞。
If the groundhog sees his shadow on groundhog Day (February 2), he will burrow back into his hole for 6 more weeks of winter.
每年二月二日，传说这一天土拨鼠会在冬眠后第一次跑出洞穴，如果它看见自己的影子则会返回洞中继续冬眠，冬天将继续。
Front, back, who CARES? A hole is a hole.
前面、后面，谁在乎？洞就是个洞。
He emerged out of his hole, darted in a couple of directions, and then scurried back.
他从洞里出来，朝几个方向猛冲之后又迅速地返回洞里。
Commercial experiment had better results than that of bench test. Soft sponge back-lining carpet with symmetrical bubble hole density and high elasticity carpet was produced.
工业实验结果比小试结果更佳，制得了泡孔密度均匀、柔软、弹性好的海绵背衬地毯。
Now he believes that anything emitted from a black hole can be identifiable back to its source, " said Wald, an expert on black holes."
现在他相信从黑洞释放出的任何物质都能追溯到来源。
Patient: There's a hole in my back tooth, and a filling has fallen out.
病人：我后面这颗牙有个洞，里面补过的填充物掉出来了。
At once it turned and went back into the sand at the bottom of the hole.
它马上转过身回到洞底的沙中去了。
They've taken x-rays that showed a hole in the back of the mummy's skull.
他们对木乃伊进行X光检查，发现头盖骨后面有一个孔。
The catheter is then withdrawn back into the right ventricle, with the first disc positioned against the left ventricular wall and the connecting shaft filling the hole created by the rupture.
导管接着后退进入右心室，随着第一片定位在左心室壁上，连接轴填充心脏破裂所形成的缺损。
And Milly runs back to the hole in time.
米利及时跑回洞里。
This image told us that Tut died when he was 19. It also showed that a murderer didn't make the hole in the back of his head. Instead, mummy makers made it after Tut had died.
该图像告诉我们图坦卡蒙死的时候19岁，还显示他脑后的孔不是被人谋杀时留下的，而是木乃伊制作者在他死后造成的。
Astronomers believe that only 50% of the mass of the dilapidated star gets swallowed by the black hole; the other half gets "burped" back out into space before it reaches the point of no return.
天文学家们认为被黑洞吸入的恒星只有50%的质量会被它吞掉；而剩下的一半会因黑洞“打嗝”而在万劫不复之前返回外界。
We pulled the rope back and forth across a hole full of water and mud.
我们把绳子拉过来又拉过去，中间是一个大坑，坑里满是污水和泥巴。
It seems that one of you digs a hole, and then the other guy immediately fills it back up again.
好像是你们其中一人先挖一个洞，另一个人马上又把洞填上了。
When bottom hole liquid increases in gas well, back pressure increases, and gas production is reduced.
在气井中，当井底积液增多时，会增大井底回压，降低产气量。
Little Mary, aged six, was in the back garden of her home. She was filling in a hole when her neighbour looked over the fence.
当她家的邻居隔着篱笆看的时候，六岁的小玛丽正在她家的后花园里填坑。
It has been analysed the causes for the heavy surface spalling of back-up roll for a finishing mill. The result shows that the main causes are gas hole, shrinkage and bad heat treatment.
对连轧机精轧支承辊大面积剥落的原因进行了深入的分析，结果表明，轧辊内部的缩孔、气泡及热处理不当是造成轧辊表面剥落的主要原因。
It has been analysed the causes for the heavy surface spalling of back-up roll for a finishing mill. The result shows that the main causes are gas hole, shrinkage and bad heat treatment.
对连轧机精轧支承辊大面积剥落的原因进行了深入的分析，结果表明，轧辊内部的缩孔、气泡及热处理不当是造成轧辊表面剥落的主要原因。
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