Less dense substances move upwards to form a crust.
密度小的物质向上浮动并形成一层皮。
The subjects of the curriculum form a coherent whole.
课程中的科目构成了一个连贯的整体。
When assembling the pie, wet the edges where the two crusts join, to form a seal.
捏合馅饼时，弄湿两块面皮封合的边缘，以形成一个封口。
Two atoms of hydrogen combine with one atom of oxygen to form a molecule of water.
两个氢原子和一个氧原子结合组成一个水分子。
If you are hoping to form a new relationship tread carefully and slowly to begin with.
如果你希望建立一种新的关系，开始时就要小心缓慢行事。
Airbags inflate instantaneously on impact to form a cushion between the driver and the steering column.
安全气囊在碰撞时立刻膨胀，在司机和方向盘之间形成一个缓冲。
Police and bodyguards had to form a human shield around him as the almost hysterical crowds struggled to approach him.
当近乎歇斯底里的人群奋力接近他时，警察和保镖们不得不在他周围形成一堵人墙。
Children clutching empty bowls form a queue.
抓着空碗的孩子们排成一队。
The glass fits on top of the jug to form a lid.
这个玻璃杯放在大罐口上恰好当个盖子。
The flowers mingle together to form a blaze of colour.
鲜花锦簇，色彩绚烂。
The peace process has ground to a halt while Israel struggles to form a new government.
当以色列力图建立新政府时，和平进程已逐渐停顿下来。
As lava flows and spreads to form a shield volcano, the volcano's eventual height depends on the new mountain's ability to support its own weight.
随着熔岩流动和扩散从而形成盾状火山，这座火山的最终高度取决于这座新火山支撑自身重量的能力。
If it is displayed on such occasions, do not allow the flag to fall to the ground, but let it be carried high up in the air to form a feature of the ceremony.
如果在这种场合展示国旗，不要让国旗掉到地上，而是让它高高地悬在空中以构成仪式的特色。
For instance, subjects are given three words such as "age", "mile" and "sand"—and asked to come up with a single word that can precede or follow each of them to form a compound word.
例如，给受试者三个单词，如“年龄”、“英里”和“沙子”，并要求他们想出一个单词，这个单词可以在这三个词之前或之后组成一个复合词。
Particles of wet flour cohered to form a paste.
湿面粉的颗粒粘在一起形成一个面团。
Having an efficient means of transportation, that helps the Iroquois to form a federation linked by natural waterways.
有了有效的交通工具，有利于易洛魁人建立一个由自然水道连接起来的联邦。
At one of the bottlenecks, forested hills rise to form a V, leaving a corridor of open ground only about 150 metres wide, filled with private homes.
在其中一个瓶颈山区，森林覆盖的山丘形成一个V 形，只剩下150米宽的开放地带，里面全是私人住宅。
Stained glass of course is simply glass that has been colored and cut into pieces and re-assembled to form a picture or a decorative design.
当然，彩色玻璃就是着色后切割成片，然后重新组装成一幅画或一个装饰设计的玻璃而已。
Once synthesized, the histones move into the cell nucleus, where a section of DNA wraps around them to form a structure that resembles beads, or knots, on a string.
一旦合成，组蛋白就会进入细胞核，细胞核内的DNA片段会将组蛋白包裹起来，形成一种类似串珠或绳结的结构。
I held my camera tripod in both hands to form a barrier as the bear rushed into me.
熊冲向我时，我双手拿着相机三脚架形成了一道障碍。
To form a tornado, cold air must sit above warm and moist air, and the wind needs to go in different directions at different heights, creating shear forces.
形成龙卷风，寒冷的空气必须处在暖湿的空气上部，而风应该在不同高度向不同的方向运动，以此创造出剪切力。
Emergents, which do not form a continuous layer, are usually the giants of the forest, reaching heights of 35 to 70 m or more, and trunk sizes of over 2 m in diameter.
不形成连续层的新生植物通常是森林中的巨人，高度可达35至70米或更高，树干直径超过2米。
All of these ingredients form a mixture.
所有这些成分构成一种混合物。
These tiny threads come together to form a single thread.
这些细线聚在一起形成一条线。
Even though we tried our best, it's very difficult to form a new habit.
即使我们尽了最大的努力，也很难形成一个新的习惯。
Sometimes one living thing kills another to live, so they form a food chain.
有时一种生物为了生存而杀死另一种生物，所以它们形成了食物链。
The spines of a fire urchin form a multicolored flower off Komodo Island, Indonesia.
火海胆的刺在印度尼西亚科莫多岛附近形成了五颜六色的花朵。
The Queqiao satellite will form a communication bridge between controllers on Earth and the far side of the Moon.
鹊桥卫星将在地球的控制器和月球背面之间形成一座通信桥梁。
Menand notes, "the great books are read because they have been read"—they form a sort of social glue.
梅南德指出，“伟大的作品被人阅读，是因为已经被读过”——它们形成了一种社会凝聚力。
The test lasted for 21 days because some scientists believe that 21 days is long enough to help form a habit.
这项测试持续了21天，因为一些科学家认为21天足以帮助形成一种习惯。
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