难以

This time the small number of blastocyst cells, once affected by the impact of harmful substances, it is difficult to repair cell damage.

这个时候囊胚细胞数量较少，一旦受有害物的影响，细胞损伤则难以修复。

AIM:Studies on totipotential stem cells using primordial germ cells have the same application prospect as embryonic stem cells, especially for the animals difficult to isolate embryonic stem cells from blastula.

目的：应用原始生殖细胞进行全能干细胞的研究具有与胚胎干细胞同样广阔的前景，尤其适合于难以从囊胚内细胞团中分离培养胚胎干细胞的动物。

GV oocytes with normal shape were not obtained in the group which was stored at 20℃ for 24 h and at 25℃ for 14 h; A blastula rates (64%) of all groups in average was gotten in culturing 2-cell in vitro, and there is no significant difference in temperature and time of storage. After transplantating some of the 2-cell embryos which were obtained from GV oocytes stored at 15'C for 8 h, normal infant mice could be obtained.

在20℃下保存24h和25℃下保存14h时，难以获得形态正常的GV期卵；体外受精获得的2细胞期胚经体外培养，总体上有64%的胚胎发育至扩张囊胚，未见有保存温度和保存时间的显著影响，且利用在15℃保存8h后的GV卵获得2细胞期胚的移植获得正常新生小鼠。

The vendors, the stingy consumers, the blatancy of the market and the vulgarity of fashion, if we link all above together and scrutinize them with our compassion, Oxford Street, we can find, rolls out in front of us a vivid panorama of our authentic urban life and tells every one at the same time what is the nature of existence.

在有一点就是除了BBC新闻和严肃的内容，其他的内容比方说他们的喜剧节目，可以说根本听不懂，我不知道这是为什么，一旦语速一快，我发现连里面单词都难以判断。

Either strategy would be difficult to carry out in the full blaze of today's media attention.

要么战略将难以进行，在今天的媒体的关注充分大火了。

And the issue that current almost all community puts in integral to be used up hard, of skyline bleachery roll out, also be one kind uses up integral, raise user vivid jerk and agglutinant kind.

而且当前几乎所有社区都存在积分难以消耗的问题，天涯晒场的推出，也是一种消耗积分，增加用户活跃度和粘性的方式。

Netizen "Bleater" support exposure, and allow prostitutes prostitution are difficult to cover up the ugly face.

网友"羊咩咩"支持曝光，让卖淫者嫖娼者丑恶嘴脸难以遮掩。

For removal and change of casing in oil layer section, the cementing quality can not be ensured,the oil layer protection technique is not perfect,the mill efficiency is low,and the air bleeder treatment technique is not qualified.

针对油层部位取换套施工中存在的固井质量难以保证、油层保护技术不完善、套铣效率低以及放气管处理技术不过关等问题开展攻关，形成了配套的油层部位取换套技术。

This concept pithily reveals the longstanding, unclear white-collar crime problem, and clearly points out the criminals include not only paupers or persons mentally deranged who commit bloodguilt, crime of pillage, crime of theft, etc., but also the dapper upper-class people who utilize their professions, social status, influence and intelligence technique to commit the worse crimes which can invisibly evade the criminal law and avoid being punished effectively.

这一概念简洁而有力的向人们揭示了长期存在但一直模糊不清的白领犯罪问题，清楚的指出犯罪并不仅仅是穷人或者精神异常的人犯下的杀人、抢劫、盗窃等等，衣冠楚楚的社会上层人士凭借其职业、地位和权势，运用智能手段的犯下的罪行更为严重，同时更加具有隐蔽性和对刑法的规避性，难以得到有效的惩治。

Bloodstain pattern analysis is important in criminal scene reconstruction.

但在实际的工作当中，由于人为或自然因素的破坏，使现场尤其是犯罪嫌疑人衣物上的血迹因难以发现或血迹形态不能识别而无法采取。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。