在顶端的

The pinwheel's core contains the apical endings of B1 cells and in its periphery two types of ependymal cells: multiciliated (E1) and a type (E2) characterized by only two cilia and extraordinarily complex basal bodies.

其车的中心含有B1细胞的顶端末梢，而在风车周围则包含两种室管膜细胞：其中一种是多纤毛的E1细胞，另一种则是具有2纤毛以及非常复杂基体的E2细胞。

Just hatched nymphae\'s,had the aggregated habit,the most nymphaes often gathered in together,crawled to the host cactus\'s peak,sought the new stem piece, derived the new nutrition.

刚孵化的若虫，具有群集习性，多数若虫常聚集在一起，爬到寄主仙人掌的顶端，寻找新的茎片，以汲取新的营养。

Physiologically, our model estimated 2.6 days to reach the single ridge stage, 5.6d to the double ridge stage, 11.3d to the stamen and pistil initiation stage, 13.1d to the anther separation stage, 15.3d to the pollen mother cells stage and 18.2d to the tetrad stage. Phenologically, estimations were 13.1d to reach the jointing stage, 28.7d to the heading stage, 32.8d to the grain filling stage and 51.5d to the maturity stage. PDT was consequently used as a unified scale for measuring developmental progress of different cultivars under different climates and cultural practices.

经测算，各大麦品种到达单棱期、二棱期、雌雄蕊分化期、药隔形成期、雌蕊柱头二裂分叉期、雌蕊柱头毛状突起期等顶端发育阶段的生理发育时间分别为2.6、5.6、11.3、13.1、15.3、18.2、28.7d，到达出苗期、拔节期、抽穗期、灌浆期和成熟期等主要物候期的生理发育时间为0、13.1、28.7、32.8、51.5d，形成了不同大麦品种在不同气候和栽培条件下统一的衡量发育的定量尺度。

Inflorescence with each flower surrounded by a 5-fid, calyxlike involucre of bracts, arranged in terminal,± flat-topped cymes, rarely solitary; involucral lobes erect, acuminate, plicate, not enlarged after flowering.

花序每花被5裂的，苞片的萼片状的总苞包围，排列在顶生，多少顶端平的聚伞花序，很少单生；总苞裂片直立，渐尖，折扇状，花后不放大。

English Summary/英文概要: Between the 8th and 15th centuries, scholars and researchers working from Samarkand in modern-day Uzbekistan to Cordoba in Spain advanced our knowledge of astronomy, chemistry, engineering, mathematics, medicine and philosophy to new heights.

8至16世纪期间，在现在乌兹别克斯坦撒的马尔罕和西班牙科尔多瓦工作的学者和研究人员将天文学，化学，工程学，数学，医学以及哲学知识理论的发展推到了一个新的顶端。

It is estimated that worldwide an audience of 4 billion will watch Olympic competition events and the total time of live TV broadcasting will top 5,400 hours, besting the broadcasting of the 2004 Athens Olympics by 2,000 hours.

据估计，全世界的观众将观赏四十点〇〇〇亿事件和奥运会比赛的总时间的现场电视直播将顶端五千四小时，好广播在2004年雅典奥运会的2000小时。

At the top of one wall she stenciled,The world always makes way for the dreamer.

为了庆祝我的成功，我请当地一位艺术家将我的新办公室漆成了一座花园，在一面墙的顶端，她刷下了这样一句话：这个世界永远属于追梦的人。

To celebrate my success I had a local artist paint my new office as a garden. At the top of one wall she stenciled,"Theworld always makes way for the dreamer."

为了庆祝我的成功、我清当地一位艺术家将我的新办公室漆成了一座花园，在一面墙的顶端，她刷下了这样一句话：&这个世界永远属于追梦的人。&

To celebrate my success I had a local artist paint my new office as a garden. At the top of one wall she stenciled,"The world always makes way for the dreamer."

为了庆祝我的成功，我请当地一位艺术家将我的新办公室漆成了一座花园，在一面墙的顶端，她刷下了这样一句话：&这个世界永远属于追梦的人。&

The drawing-room, as I have before observed, was raised two steps above the dining-room, and on the top of the upper step, placed a yard or two back within the room, appeared a large marble basin, which I recognised as an ornament of the conservatory- where it usually stood, surrounded by exotics, and tenanted by gold fish- and whence it must have been transported with some trouble, on account of its size and weight.

如我以前所观察的那样，客厅已垫得比餐室高出两个台阶，在客厅内靠后一两码的顶端台阶上，放置着一个硕大的大理石盆，我认出来那是温室里的一个装饰品——平时里面养着金鱼，周围布满了异国花草——它体积大，份量重，搬到这儿来一定是花了一番周折的。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。