成层了的

Planaria is the most simple in three blastoderm animal, its nerve system is ladder-like.This is the bio- evolution of the nerve system.

三胚层动物扁形动物涡虫的神经元连接成梯形神经系，有原始的脑和两条神经索，反映了原始生命反射功能的进化和演变。

The results show that the dynamic force and thermal conditions of forming the squall line were the convergence of cold air from Mongolia cold vortex and the warm-humid air current before west trough to form the convectional system at moderate 3 scale; the rapid development and southward shift of MβCSs was caused by a strong unstable stratification and the shear line of suitable vertical wind; a heavy hail occurred after a vertical liquid water content over 65 kg/m^2 was firstly measured by weather radar; a sharp reduction of VIL indicates that a disaster strong wind will occur at soon.

结果表明：蒙古冷涡旋转下甩冷空气与西风槽前的暖湿气流汇合，形成中p尺度的对流系统是飑线形成的前期动力和热力条件；强的不稳定层结和合适的垂直风切变导致了MβCSs的迅速发展和南压；在天气雷达首次观测到垂直液态水含量值超过65kg/平方公尺后2h内出现了大冰雹；垂直液态水含量的突然减小标志着灾害性大风的开始。

The grain size probability cumulative curves are characterized by the model of single segment with greater change of grain size.

但我们在对济阳坳陷古近系的湖相页岩进行研究时，却在始新统沙河街组中的湖相页岩纹层中发现了一些零散分布的风成粉砂沉积。

According to the characteristic of the inverse problems of ECT, the minimum norm solution was improved using regularization technique , and the stability of the numerical solution was analyzed via singular value decomposition principle.

在分析极小范数解的基础上，针对电容层析成像逆问题的特点，利用正则技巧对其进行改进，并利用奇异值分解定理分析了这种改进的数值稳定作用。

Based on available effort and information,the authors summarize the temporal-spatial relation between the distribution of CO_2 and hot fluid flow, analyse the positive and negative effect of the hot fluid flow on CO_2 accumulation, and build up the model of CO_2 accumulation dominated by hot fluid diapir.

在前人的研究基础上，详细地总结了CO2分布与热流体活动在平面、纵向和时间上的对应特征，认为热流体活动与CO2分布的确存在一定的对应关系；同时，认为热流体可以促进CO2气源形成，可作为CO2气运移的载体，同时促进运移通道的扩大，也为CO2气运移提供能量，流体在上侵过程中与围岩发生反应，改造了CO2气储层，热流体在向上释放能量的过程中，造成上覆地层的拱起，形成圈闭，最终也可控制CO2气成藏。

The third-floor attic was converted to living quarters in 1927 by augmenting the existing hip roof with long shed dormers.

在1927年三层顶楼被转换了成生存处所被增添与长的棚子屋顶窗的现有的四坡屋顶。

The preservation conditions of oil-gas reservoir about rift-subsidence basins inc lude tectonic evolution of basin, sealing histor y of faults after the accumulation of oil and gas, tectonic uplift and denudatio n, magmatic activity,dynamics of ground water, seal of cap rocks, a nd seal of the major faults, etc.

以盆地构造演化史研究为基础，对成藏期以后断裂的封闭史、构造抬升剥蚀、岩浆活动、地下水活动、盖层封闭和控油断层封闭进行了定性和定量分析，总结了断陷盆地油气藏保存条件的研究内容和以模糊评判为主的评价方法。

Arethusa was once a fairy maiden huntress.she carriedbow and arrows for artemis in her hunting.she was sodevoted to her work that she cared for neither admirationnor love.one sunny summer day,she felt hot and found a coolstream quite attractive.she jumped into the delightful streamand happily started swimming.presently she heard a bubbling in the stream and was surprised to find it was the thunderingvoice of the rivergod alpheus.the maiden made for the shore and,fully naked,started running away.taking a human form,the river-god followed closely in pursuit .onward they spedover hill and valley,across dark heights and over broad plains,until the waters of the western sea lay stretched out right before them .helplessly the exhausted arethusa cried to her patronessfor help.artemis instantly cast a cloud over her body,but the pigheaded alpheus was not to be tricked.then a cold sweatbroke from the maiden''s arms and legs.the drops of water fellfrom all over her body.she had been turned into a spring!

阿瑞塞莎是位迷人的仙女猎人。每逢阿耳特弥斯打猎时，她负责携带弓箭。她对工作专心致志，既不考虑赞美也不顾及爱情。一个炎热的夏日，她感到很热，便找到一条凉爽的溪流，深感惬意。她跳入令人愉快的溪水中，兴致勃勃地畅游。不一会儿，听到水泡声，她大吃一惊地发现：那是河神发出的闷雷声。仙女向岸边游去，赤身裸体地跑开了。河神便装成凡人的样子在后紧紧地追赶着。他们一直向前飞奔，越过小山，跨过峡谷，翻越大山，掠过广阔的平原，直到西海的水域展现在他们的眼前。绝望中精疲力竭的阿瑞塞莎哭叫着向她的保护神求救。阿耳特弥斯迅速将一层云雾披在仙女的身上。但顽固不化的阿耳法斯并未上当受骗。接着一股冷汗从仙女的肢体上溢出，并且浑身上下淌着水珠，她被变成一眼泉水了。

Arethusa arethusa was once a fairy maiden huntress.she carriedbow and arrows for artemis in her hunting.she was sodevoted to her work that she cared for neither admirationnor love.one sunny summer day ,she felt hot and found a coolstream quite attractive.she jumped into the delightful streamand happily started swimming.presently she heard a bubbling in the stream and was surprised to find it was the thunderingvoice of the rivergod alpheus.the maiden made for the shore and ,fully naked ,started running away.taking a human form,the river-god followed closely in pursuit .onward they spedover hill and valley ,across dark heights and over broad plains, until the waters of the western sea lay stretched out right before them .helplessly the exhausted arethusa cried to her patronessfor help.artemis instantly cast a cloud over her body,but the pigheaded alpheus was not to be tricked.then a cold sweatbroke from the maiden''s arms and legs.the drops of water fellfrom all over her body.she had been turned into a spring!

阿瑞塞莎阿瑞塞莎是位迷人的仙女猎人。每逢阿耳特弥斯打猎时，她负责携带弓箭。她对工作专心致志，既不考虑赞美也不顾及爱情。一个炎热的夏日，她感到很热，便找到一条凉爽的溪流，深感惬意。她跳入令人愉快的溪水中，兴致勃勃地畅游。不一会儿，听到水泡声，她大吃一惊地发现：那是河神发出的闷雷声。仙女向岸边游去，赤身裸体地跑开了。河神便装成凡人的样子在后紧紧地追赶着。他们一直向前飞奔，越过小山，跨过峡谷，翻越大山，掠过广阔的平原，直到西海的水域展现在他们的眼前。绝望中精疲力竭的阿瑞塞莎哭叫着向她的保护神求救。阿耳特弥斯迅速将一层云雾披在仙女的身上。但顽固不化的阿耳法斯并未上当受骗。接着一股冷汗从仙女的肢体上溢出，并且浑身上下淌着水珠，她被变成一眼泉水了。

A stereograph of the low velocity zone in the upper crust is obtained by the three-dimensional seismic tomography.

地震资料的三维层析成像给出了火山区上地壳内部的P波低速体的位置和立体图像。

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