Centromere is the primary constriction on the chromosome, a region at which the sister chromatids are held together.
着丝点是染色体的主缢痕，在这个地方姐妹染色单体连在一起。
A true epithelial tissue is present only in a single layer of cells held together via occluding junctions called tight junctions.
真正的上皮组织仅存在于通过称为紧密连接的咬合带而保持在一起的单层细胞中。
They're held together with tendons and ligaments.
肌腱和韧带把它们连在一起。
At first balls were made of grass or leaves held together by vines.
起初，球是用藤条把草或树叶捆在一起做成的。
The cells in the ovaries of frogs are very tightly held together by connective tissue.
在青蛙的卵巢里的细胞通过结缔组织紧密的链接在一起。
The molecules are held together by van der Waals forces.
分子是由范德华力约束在一起的。
Modern feathers consist of thousands of fibres held together by tiny hooks.
现代鸟类羽毛由成千上万束靠细钩聚拢在一起的纤维构成。
The seals faces are held together by springs and hydraulic forces on the seal.
由作用在密封上的弹簧力和液体压力使两密封面压紧在一起。
Bundles of fibres from neurons held together by connective tissue form nerves.
成束的来自多数神经元的纤维由结缔组织包绕形成神经。
Liquids whose molecules are held together by hydrogen bonds are called associated liquids.
液体的分子通过氢键结合在一起时，称为缔合液体。
Stone bridges consist of pillars, abutments and arches made up of stones held together by mortar.
石桥由灰浆结合在一起的石头墩子、桥台和桥拱组成。
It is held together by ligaments and moved at the joints by the muscles, which are attached to it.
骨骼由韧带连接，并由附着其上的肌肉使关节可活动。
Of course that is all ended, since families are held together by no bond of coercion, legal or social .
当然，那种情况今天已经不存在了，因为现在的家庭不是由法律或社会的强制性来维系的。
Many asteroids are weakly bound piles of rubble, held together by their own minute gravitational attraction.
大多数的小行星都是由碎石组成，而这些碎石靠着自身之间微弱的万有引力结合在一起。
The walls are made of tightly packed straw bales held together with bamboo pins and covered with fishing nets.
墙壁是一块块密实的草捆，用竹针结合在一起，上面盖着渔网。
The Blade is created using a series of chassis parts held together by carbon rods - rather like a giant Lego kit.
刀锋的底盘部件是由碳棒拼接而成，就像一组巨型的乐高玩具。
They are held together, poised upright like a pencil standing on its point, by the recursive dynamics of coevolution.
蝴蝶和马利筋，犹如立足笔尖的铅笔，依靠共同进化的递归动态而立得笔直。
As the great Arab historian Ibn Khaldun observed: “Only Tribes held together by a group feeling can survive in a desert.”
正如伟大的阿拉伯历史学家伊本•哈勒敦所言：“只有以一种群体认同感和大家庭归宿感凝聚起来的部族才能在沙漠中存活。”
The palate is full and rich, with a flavorful plum character. Well balanced, this wine is held together by ripe tannins.
口感丰富且饱满，带有美味的李子香，果味与成熟的单宁相结合从而形成了极好的平衡感。
Is it, for instance, mostly rock and ice with a few pockets of gas, or is it a loose pile of rubble held together by gravity?
例如，是由大量的石头、冰川和少量的气体构成还是由在重力作用下聚在一起的松散的碎石堆构成。
The SI joints can be divided into anterior and posterior and are held together by the anterior and posterior sacroiliac ligaments.
骶髂关节可分为前后两部分，通过前后骶髂韧带连接在一起。
While there is obviously no rain on Mars, landers and rovers have observed similar clumps that are held together by electrostatic forces.
尽管在火星上显然没有降雨，但火星探测器及火星登录车均观察到在静电力作用下集结成的类似团块。
The Colosseum was constructed with tens of thousands of tons of a type of marble called travertine and held together with 300 tons ofiron.
罗马竞技场是由数万吨名为“石灰华”的大理石加上300吨的钢铁铸建而成。
Amazingly, it is held together just by the LEGO blocks' patented nubs, no glue was applied to the tower (unlike some of his other projects).
令人惊讶的是，它完全由乐高块自身的咬合结构来组合起来的，没有使用任何胶水(不像他的其他作品)。
The Colosseum was constructed with tens of thousands of tons of a type of marble called travertine and held together with 300 tons of iron.
罗马竞技场是由数万吨名为“石灰华”的大理石加上300吨的钢铁铸建而成。
A hand-tied bouquet in coordinated wrappings will look so much better than a bunch held together with a rubber band and wrapped in cellophane.
用适合的包装打造的花束会比橡胶圈加玻璃纸呈现出来的感觉好上百倍哦。
Ibata explained that the cosmic web filaments are held together by dark matter, unseen stuff that makes up 85 percent of all mass in the universe.
Ibata说，宇宙网络的丝状物是由看不见的暗物质维系在一起的。宇宙中85%的质量都是暗物质。
A prone floating position in swimming in which the swimmer's arms are extended straight forward above the head and the legs are held together.
一种俯卧状漂浮游泳的姿势，游泳者的胳膊向前直伸超过头部，而且腿合在一起。
He drove a truck that Raley called Frankenstein because it was made of parts Delno had assembled himself, held together with baling wire and duct tape.
德尔诺驾驶的卡车，雷利称之为“拼装怪车”，因为那是由德尔诺用他自己收集的零配件组装的，用打包钢丝和布基胶带绑在一起。
He drove a truck that Raley called Frankenstein because it was made of parts Delno had assembled himself, held together with baling wire and duct tape.
德尔诺驾驶的卡车，雷利称之为“拼装怪车”，因为那是由德尔诺用他自己收集的零配件组装的，用打包钢丝和布基胶带绑在一起。
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