Stress is often a factor in the development of long-term sickness.

心理压力常常是形成长期病的一个因素。

《牛津词典》

For such reasons, we can assume that there must be an important random factor in neural development, and in particular, that errors must and do occur in the development of all normal brains.

基于这些原因，我们可以假设在神经发育过程中一定存在一个重要的随机因素，特别是在所有正常大脑的发育过程中确实也会发生错误。

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The types of socialexperiences children have do factor into the development of autobiographical memories.

儿童的社会经验类型在自传体记忆的发展中起着重要的作用。

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This development represents a potentially radical factor in the transformation of health care the doctor as union worker.

WSJ: David Leffell: The Doctor's Office as Union Shop

Samsung's own in-house designed LTE modem chipset, Kalmia, enabled the development of a small form factor netbook with LTE capability.

ENGADGET: Samsung shows off LTE-packing netbooks at MWC

This technical assistance programme demonstrates the importance given by both the European Union and UNESCO to implement concrete activities that promote culture as a key factor of sustainable development.

UNESCO: First results of assistance to countries strengthening their cultural policies and industries | United Nations Educational, Scientific and Cultural Organization