那是一次难产。
当你高价买入低价卖出时，即使你带着极大的热情做它，也很难产生收益的。
When you buy high and sell low, it's really hard to generate returns, even if you do it with great enthusiasm.
他们还在难产的时候使用产钳。
因此，行星就很难产生大气层。
奶牛行为和难产之间是否有内在的联系？
胎膜早破；难产；并发症。
但这很难产生巨大的惊喜。
与头胎不同，这次是难产。
目的了解胎膜早破难产发生率升高的原因。
Objective Understand reason of high occurrence rate of dystocia while caul early broken.
他的妻子在生他们第六个孩子时因难产而死。
Dodd's mother) died in childbirth with their sixth child. Mr.
难产，接生婆束手无策，需要马上去医院，把孩子生下来。
The pregnancy was difficult, and the woman needed to go to the hospital to have her baby.
本文对7例在养殖条件下难产的花面狸进行了研究。
The paper studied 7 case Masked civet of dystocia in farm condition.
在骨盆问题引起的难产前，无效的宫缩应该加以纠正。
Inefficient uterine action should be corrected before attributing dystocia to a pelvic problem.
目的探讨头位难产的发生率、常见原因、处理方法及预后。
Objective To investigate the rate of incidence, cause, treatment and recovery of cephalic presentation dystocia.
让步于这种负面感受使得很难产生决定行动的计划和坚持到底的动力。
Giving way to this kind of negative perception makes it extremely difficult to come up with a plan of action or the motivation to follow through.
这样传统的多阶段库存模型很难产生最优的库存控制策略。
Such traditional multi-stage inventory model is very difficult to have the most superior inventory control strategy.
当困难产生时，尽力保持平静，并对所发生的事情做出理性的判断。
When difficulties arise, try to keep calm for a little while and make some kind of rational sense out of what is happening.
这使得很难产生了解另一轮经验的热情，并且用作放弃收集更多数据的论点。
This makes it hard to generate enthusiasm for another round of lessons learned, and has been used as an argument to forego collecting any more data.
这些人都经历过难产，也就意味着她们的胎儿过大或者胎位不正不能从产道生产。
All had suffered from obstructed labor, meaning that their babies were too big or in the wrong position to pass through the birth canal.
剖宫产占难产分娩的比例逐年增高，同期产钳助产占难产分娩的比例逐年下降；
The ratio of cesarean section birth to dystocia delivery increased year by year, with reverse trend of forceps delivery.
一个街垒处在危急状态之前是混乱的，而在危急时刻则纪律严明；危难产生了秩序。
A barricade before the arrival of danger is chaos; in danger, it is discipline itself. Peril produces order.
研究表明，即使在鸟类在其他地方重新栖息下来，他们也比过去更难产卵和育雏。
The study shows that even after birds reestablish themselves elsewhere, they have a harder time laying eggs and rearing chicks than they used to.
女孩还没有成年，妇女因营养不良而生长受限，太小的骨盆使得她们分娩时极易难产。
Girls not fully grown, or women stunted by malnutrition, often have small pelvises that make them prone to obstructed labor.
亨利的第三任妻子简·西摩尔生下一个男性继承人，即爱德华，但很快死于一次难产。
Henry's third wife Jane Seymour provided a male heir, Edward, but died soon after a difficult Labour.
但是家庭压力让他不得不跟他爸爸一样当个医生，接着他就对难产这一问题产生了兴趣。
But family pressure had induced him to follow his father into medicine, and he began to be fascinated by the difficulties of birth.
但是家庭压力让他不得不跟他爸爸一样当个医生，接着他就对难产这一问题产生了兴趣。
But family pressure had induced him to follow his father into medicine, and he began to be fascinated by the difficulties of birth.
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