由于...

"Sometimes to personal weakness" is the reduced form of "sometimes this is due to personal weakness".

有时这是由于缺乏知识、能力或经商的经验；然而有时则是由于个人的缺点所致。

In recent years, the fiber grating external cavity semiconductor laser regarded as one of the candidate light sources of DWDM systems, has received considerable attention. Usually, it is thought that the lasing wavelength of a FGESL is locked at the Bragg reflection wavelength of fiber grating.

由于FGESL的激射波长主要由光纤光栅的布拉格波长确定，因此选择具有合适布拉格波长的FG就能使FGESL的激射波长处于预置波长处；同时，由于FG的布拉格波长受温度变化的影响相对较小(～0.01nm／℃)，因此FGESL与DFB-LD相比具有更高的温度稳定性。

Is this owing to the generosity of him in whose possession it is found, or to the remissness of the officers of justice?

这是由于占有者的慷慨呢，还是由于持正义者的疏忽呢？

In this experiment, repetitiously intermittent bead-to-bead transfer of cell was chosen to simulate the close and continuous process. During the transfer of 1:4 expansion (the ratio of fresh and confluent microcarriers) for 4 times, it was found that cell density remained stable, while the HA titer showed a slight decrease probably due to the bad culture environments.

由于受实验条件的限制，本实验采用多次间歇加料的方式来模拟连续培养过程，经过4次新老载体1：4比例的放大培养，发现细胞密度可以保持稳定，而病毒产量有轻微下降的趋势，这可能是由于病毒生长环境比较恶劣的缘故。

Two kinds of thermal residual stresses exist in metal matrix composites. One of them is temperature gradient induced thermal stresses caused by temperature gradient in MMC. The other can develop upon cooling from the processing temperature to room temperature due to the coefficient of thermal expasion mismatch between the fiber and matrix and is called CTE mismatch induced thermal stresses.

金属基复合材料有两种形式的热应力，一种是在MMC中由于温度梯度引起的热应力，即温度梯度诱导的热应力；另一种是在冷却过程中由于基体金属和纤维的热膨胀系数不匹配引起的热应力，即热膨胀系数不匹配诱导的热应力。

Known susceptibility genes account for less than 25% of the familial risk of breast cancer, and the residual genetic variance is likely to be due to variants conferring more moderate risks.

大家知道乳腺癌的家族危险性的小于25%是由于易感基因，而剩余的遗传变异更多是由于变异体，而这种变异引起更多的风险。

This may also be due to the influence of Reynolds number, as the flow of air through the fabric pores is a function of such.

这也可能是由于受雷诺数，由于气流通过织物的孔隙是一个功能等。

However, because discontent can also provide you with a safety zone, change from discontent is something that you have to execute consciously.

不过，由于称心还能提供给你一个温馨区，由于称心的变化是要你有认识去实施的。

About half of ectopic pregnancies occur because of an identifiable lesion such as chronic salpingitis from pelvic inflammatory disease or adhesions from appendicitis, endometriosis, or previous laparotomy .

大约有一半的异位妊娠是由于盆腔炎性疾病而引起的慢性输卵管炎、阑尾炎、子宫内膜异位症或是由于曾做过剖腹手术而引起的。

This could possibly take place in a similar way to how the Sandinista FSLN was voted out of office when the pro-imperialist right won elections in 1989, following frustration, disappointment and exhaustion at the failure of the revolution in Nicaragua to go forward and overthrow capitalism.

这可能发生类似于桑蒂诺斯塔的FSLN阵线在1989年选举中由于亲帝国主义势力的胜利而被赶出政府的情况，这就是由于民众对于在尼加拉瓜所发生的革命和推翻资本主义制度的失败而带来的焦虑、失望和沮丧所造成的。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。