Others have proposed lack of oxygen or hallucinogenic drugs as a trigger.
有其他专家认为缺氧和服用致幻药物可能是诱因。
Making matters worse, a lack of oxygen often then triggers VEGF's production cycle.
更糟糕的是，VEGF的过度产生往往会陷入缺氧引起的恶性循环中。
Bleeding can cause foetal hypoxia (lack of oxygen to the brain of an unborn child).
出血会导致胎儿脑缺氧。
Persons suffering from lack of oxygen should be moved to areas with normal atmosphere.
应当马上把缺氧的人转移到有正常空气的区域。
When he finally reached the camp on the mountain, he was numb from lack of oxygen and fatigue.
抵达山上露营地点时，他因缺氧和疲惫而失去了知觉。
Zhou Jianghua’s brother survived the explosion, but suffered severe brain damage from lack of oxygen.
周家华（音译）的兄弟在爆炸中死里逃生，但由于缺氧造成了严重的脑损坏。
Many climbers leave their gear and trash behind as they descend due to exhaustion and lack of oxygen.
很多登山者由于体力不支和缺氧，在下山途中就将一些器具和垃圾丢在了山上。
Many climbers leave their gear and trash behind as they descend due to exhaustion and lack of oxygen。
很多登山者由于体力不支和缺氧，在下山途中就将一些器具和垃圾丢在了山上。
Cats and dogs are rendered unconscious within a minute, then eventually die from lack of oxygen.
这时，密闭室里的小猫或小狗会在一分钟之内丧失知觉，并且会缺氧而死亡。
In addition, the labor time is short which help to reduce harm to the mother and baby lack of oxygen.
此外，水中分娩的时间较短，能减少对母亲的伤害和婴儿缺氧的危险。
Zhou Jianghua's brother survived the explosion, but suffered severe brain damage from lack of oxygen.
周江华（音）的兄弟从爆炸中幸存了下来，但是由于缺氧而遭到严重的脑损伤。
We have clinical data from cardiac surgery that by cooling, you can preserve the brain despite lack of oxygen.
我们的心脏手术的临床数据表明，尽管冷却时大脑缺氧，你也可以不让它受损伤。
"We don't know if tissue dies because of a lack of oxygen or when oxygen levels are restored," says Whitesides.
我们不清楚是否组织因为缺氧而死，或是在含氧量恢复时死掉。
Some of these problems, similar to those of living in outer space, are pressure, Lack of oxygen and weightlessness.
其中有些问题，与在外层空间生活时所遇到的一样，是压力。缺氧和失重现象。
A lack of oxygen around the time of birth (perinatal asphyxia) can cause death and long-term illness in newborn infants.
新生儿在出生时缺氧(周产期窒息)，可能导致死亡和长期的疾病。
Simple concussions cause short losses of consciousness. Coma from lack of oxygen may last several weeks and is often fatal.
单纯的脑震荡可引起短时间的知觉丧失，而缺氧可以造成长达数周的昏迷，并常致命。
Mr. Baributsa says the storage bags are thick enough that any insects already in the cowpeas will die from a lack of oxygen.
Baributsa表示这种储藏袋足够厚，豇豆中的任何昆虫都将会死于缺氧。
Because of the lack of oxygen getting to the cells, the cells are no longer able to carry on their various metabolic processes.
由于细胞中缺少氧气，所以细胞不能完成，它们的各种新陈代谢活动。
If the flow of blood isn't restored quickly, the section of heart muscle becomes damaged from lack of oxygen and begins to die.
如果流动的血液不能很快恢复，这部分的心脏肌肉损坏并且缺乏氧气人就会开始死亡。
Your supply will be cut off completely and many will see themselves experiencing the effect of ones choking for lack of oxygen.
你们的供应将被完全切断，许多人将经历如缺氧窒息的效果。
A dangerous tourist spot, the mountain has claimed many adventurers' lives-from falls, lack of oxygen, exposure, and other deadly pitfalls.
这是一个危险的旅行地点，珠峰夺去了许多探险者的生命-坠落、缺氧、暴露、和其他致命的隐患。
The horrified victims have little chance to even realize what is happening before they are engulfed and lose consciousness from lack of oxygen.
极度恐惧的受害者甚至还没有意识到发生了什么事情，就被火暴吞没，缺乏氧气而失去了知觉。
The result shows that black rice pigment has a clear tendency to enhance the ability to resist fatigue and bear the lack of oxygen of animal baby.
结果表明：黑米色素对提高动物肌体的抗疲劳能力与抗缺氧能力的趋势是明显的。
If the fetus were experiencing severe and prolonged lack of oxygen, it may then gasp as soon as it was born, possibly inhaling water into the lungs.
如果胎儿正在经历严重的和长期缺氧，则可能出生后就喘气，可能把水吸入到肺中。
Experts said the fish may have died from lack of oxygen due to algae, while locals wondered if high winds overnight might have something to do with it.
专家称这些鱼可能是因为海藻侵袭，导致缺氧死亡，也有专家称是因为连夜暴风雨所致。
Serious leg and foot infections, even gangrene and amputation, are due to poor blood circulation, lack of oxygen and nutrients to tissue, and nerve damage.
严重的腿部和脚步感染，甚至坏疽和截肢，这都是由于血液循环不良，肌肉缺少氧气和营养，神经损伤导致的。
Lack of oxygen is a factor in the development of necrotizing enterocolitis (nec), a kind of gangrene of the intestine that can be fatal in premature babies.
缺氧是坏死性小肠结肠炎(necrotizing enterocolitis,nec)，一种对发育未成熟的新生儿来说致命的坏疽，发病的重要因素之一。
Something tells us that if the lack of oxygen and the molten surface of COROT-7b didn't put off Captain Kirk and company, constant showers of silicate rocks might.
这些事情告诉我们，即使不需要氧气并且COROT - 7b的溶液表面没有延迟柯克船长及其同伴，持续的硅酸盐岩石雨可能会。
Something tells us that if the lack of oxygen and the molten surface of COROT-7b didn't put off Captain Kirk and company, constant showers of silicate rocks might.
这些事情告诉我们，即使不需要氧气并且COROT - 7b的溶液表面没有延迟柯克船长及其同伴，持续的硅酸盐岩石雨可能会。
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