下层

In addition, hindgut has also been analysed, as studies have suggested that numerous lymphoid cells occur at this location in the lamina propria and the submucosa. The Ig-bearing cells are also found in the epithelial layer occasionally.

研究牙鲆黏膜样淋巴组织结果显示在牙鲆的后肠中存在大量产生免疫球蛋白的淋巴细胞，主要分布于后肠的固有层和粘膜下层中，在粘膜层和粘膜层表面也偶有极少量的产生免疫球蛋白的淋巴细胞出现。

In order to reduce transportation congestion and make full use of the existing road resources, this thesis establishes a variable-lane road network design bilevel model under tide-like traffic flows, in which transportation management section at the upper level reallocates the lanes of two-way roads to minimize the total system cost, while transportation users at the lower level follow stochastic user equilibrium assignment principle to select travel routes.

4为了合理利用有限的道路资源和缓解交通拥挤，建立了潮汐式交通流条件下可变车道的双向道路网络设计双层规划模型，其中处于上层的交管部门通过确定最优的双向道路的车道分配方案，以达到整个交通网络系统总阻抗最小的目的，而处于下层的交通用户遵循随机用户平衡交通分配准则选择出行路径。

Four oil burners are fixed up in the second-time wind ejector of foot level respectively.

四台油燃烧器分别布置在最下层的二次风喷口中。

The super stratums of it were all kinds of shops,such as,drinkeries,restaurants,and teashops.

北宋时期的中原饮食业，无论是上层还是下层都十分讲究特色经营。

Another part of this infrastructure is moral - the ethical underpinnings available to ground a sense of duty online.

这一个下层构造的另一个部份是道德-可得的伦理支撑在线上将一个责任感置於地面。

Forests are important habitats for birds and, in temperate forests, small mammals which inhabit the dense understorey.

森林对鸟类来说是重要的栖息地，而且在温带森林里，小型的哺乳动物居住在稠密的森林下层。

At 8 km distance the eco-system began to approximate an undisturbed ecosystem where only slight changes in the understorey vegetation were observed.

在8公里处生态系统开始变成一个近似于无法干扰的生态系统，在下层植被仅可以观察到轻微的变化。

Tropical forest is wetter and usually supports only knee-high fires that spread slowly through the understorey.

热带森林比较潮湿，通常情况下只允许膝盖高的火苗通过下层植物慢慢地蔓延。

Tropical forest is wetter and usually supports only knee-high fires that spread slowly through the understorey.

热带森林则较为潮湿，通常只能使火烧到及膝高度，并缓慢地在下层植物中蔓延。

The continuity of the water system, avoiding any sort of input to the understorey via irrigation for filtering in order to hinder the potential emergence of invasive species.

在供水系统的连续性，避免通过过滤，以阻止外来物种可能出现灌溉任何方面的意见，对下层。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失