后生动物的

Particular configurations on bedding planes and on the surface perpendicular to the bedding planes lead to different explanations for the genesis of these silty dykes:(1) they are considered as the oldest trace fossils of metazoan according to the spindle-crack of siltstones on the bedding plane and the sand-filling tube configurations on the surface perpendicular to the bedding plane;(2) they are considered as the liquefied sand-veins induced by earthquake according to the sinuous configuration of siltstone dykes on the surface perpendicular to the bedding plane and the obvious liquation feature.

由于该粉砂岩岩墙在层面上和层内具有特别的形态，因而对其成因具有多种解释：在层面上呈纺锤状粉砂岩裂缝以及在层内呈砂质充填管形态，从而被认为是最古老的后生动物遗迹化石；在层内呈弯弯曲曲的粉砂岩岩墙以及明显的流体化作用特点，所以又被解释为地震振荡作用形成的液化砂岩脉。

Furthermore, microscopic observation of biofilm and aerobic granules revealed much presence of protozoa and metazoa on the biofilm and suspended sludge,and this long food chain can contribute to the sludge reduction. Only 0.175 5 of sludge yields （MLSS/CODremoved） was obtained in the experiment, which was only about 50% of the conventional aerobic processes.

此外，镜检表明好氧颗粒污泥与生物膜均聚集大量的原生动物和后生动物，形成较长和较稳定的食物链，有利于污泥减量，运行过程中污泥产率（MLSS/CODremoved）为0.175 5，仅为普通好氧工艺的50%左右。

These new materials provide new evidence for the origin, evolution and the functional evolution of the metazoan during the early stage of the Cambrian explosion.

本文报道的奇异星状生物可能代表了初具原始触手的腔肠动物早期演化类型，为研究真后生动物起源演化、能进化提供了新的实证材料。

This influx of terrestrial carbon is not apparent in carbonates older than 850 Myr, so we infer an explosion of photosynthesizing communities on late Precambrian land surfaces.

这样一个产生氧和植物的事件，甚至可能要对从前寒武纪的一个实质上为微生物的世界向寒武纪的一个后生动物世界的关键过渡负间接责任。

In this study, DRG-1 was identified to be a conserved gene in metazoans and share NF-κB binding sites with its homologues in their promoters.

在本实验中，我们发现DRG-1是一个在后生动物中保守的基因，而且在同源基因的启动子区域都含有一个NF-κB的结合位点。

Flattened organisms unique to Ediacaran that form a group outside of metazoans (i.e., not animals).

震旦纪的特殊的扁平生物，形成一个超出后生动物之外的群组。

Flattened organisms unique to Ediacaran that do not form a natural group because they include some metazoans.

震旦纪的特殊的扁平生物，由于它们中包括一些后生动物所以没有形成一个自然类群。

In recent years,'Orsten-type' fossils, characterized by remarkable preservation of the soft tissue of putative embryos and arthropod larvae, have transformed our view of the early evolution of metazoans.

近年来，&奥斯坦型化石&（其特点是，假设存在的胚胎和节肢动物幼虫的软组织保存非常完好）已经改变了我们关于后生动物早期演化的特点。

In addition, there have no enough studies in the mechanism of spermatogenesis arrest induced by heat, and also there are many negative effects in the male contraceptive methods during these years like surgical ligation of vas deferens. All these factors have brings researchers to found a safety and efficacy methods for the problems in male reproduction.

因此，本研究通过高温处理未成年动物的模型，从细胞及分子水平探讨高温作用后生精功能障碍的机理，并对高温引起不育的机制进行深入研究；这些研究对阻止、延缓或减弱上述因素对人类生育能力的损害有重要意义，同时也为临床治疗一些男性不育、指导未成年男性生殖保健和探索男性避孕措施的研究提供理论基础。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。