Migration of adult worms may occur spontaneously or as a result of some stimuli such as fever or tetrachloroethylene . 成虫的移行可自然发生，或因一些刺激诸如发热或四氯乙烯而造成。
With outer-race rotation the shields must be carefully gasketed to prevent lose of oil due to centrifugal force . 当外圈转动时，护板必须注意密封，以免由于离心力而造成润滑油的损耗。
Again, it was not the level of benefits that mattered, but the marginal loss of benefit as one moved into or out of employment . 同样，重要的不是福利的水平，而是就业失业而造成的边际损失。
As will be seen, it is largely a matter of careful experimentation and recognition of the many pitfalls awaiting the unwary . 显然，这主要是精心的实验和对于由疏忽而造成的若干失误予以判明的问题。
The likelihood of a net fiscal drain from emigration is raised by the life-cycle patterns of public goods and migration . 公益设施和移民的生命周期模式，使得由出境移居而造成财政净流出的可能性增大了。
He did not know her, and she was speculating on the division made bare by their degrees of the knowledge, a deep cleft . 他不了解她，她思索着由于他们知识水平的不同而造成的赤裸裸的分裂，这是一个深深的裂纹。
In actual car service of such batteries, the two outside positive plates were generally buckled and shorting through the adjacent separators . 这种蓄电池在实际车辆使用过程中，一般都是外面两片正极板翘曲，穿透相邻的隔板而造成短路。
The key issue is not whether agriculture should be taxed, but how developing countries can avoid the excessive costs of taxing agriculture . 关键问题不在于发展中国家是否应该对农业征税，而是在于如何才能避免因对农业征税而造成的过大损失。
She was forced to invent insignificant jobs, to prove to herself she had not lapsed from the faith which necessity and her origins made the only possible one . 她不得不想些无关紧要的事情做做，借以证明自己并没有叛离那由于贫困和出身而造成的唯一的信仰。
