In some plants, a mild nitrogen deficiency at certain stages of development may be desirable . 许多植物中，轻度缺氮在其发育的某些阶段可能是适宜的。
One method of inferring phylogeny is to pinpoint primitive as opposed to advanced characters . 推断系统发育的一个方法是准确查明那些与进化性状相对的原始性状。
By a series of subtle and complex influences, it becomes progressively to give rise to the fully developed embryo . 通过一系列精巧而复杂的影响，逐渐产生充分发育的胚。
In ungulates, the young are born in an advanced stage of development and can fend for themselves in a few days . 有蹄目动物的幼仔出生时处于发育的高级阶段，能够在几天内照料自己。
Kriebel have used x-rays for sorting as well as to determine degree of embryo development in full seeds . 克列拜尔已经用X射线对种子进行分级，并能对饱满种子中胚发育的程度加以鉴别。
In one way or another all these various regulatory substances intervene and exert recognizable effects upon the overall course of plant growth and development . 所有这些不同的调节物质以这种或那种方式参与植物生长发育的全过程。
Should be the problem of development , not be ill 应该是发育的问题，不是病啊。
Visual function development in preschool children 学龄前儿童视觉发育的研究进展
These form the poles of the developing spindle 星体形成正在发育的纺锤体的两极。
Regulation of ovarian follicles growth and development 哺乳动物卵泡生长发育的调控
