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- From Blocks, drag the Concentric layer 1 shape onto the drawing page to form the outer layer of the onion. 从“块”中,将“同心圆第1层”形状拖到绘图页上,形成洋葱的外层。
- Drag the Concentric layer 2 shape onto the drawing page, position it inside the outer layer until it snaps into place, and then release the mouse button. 将“同心圆第2层”形状拖到绘图页上,将它放置在最外层之内,直到该形状处于适当的位置为止,然后松开鼠标按钮。
- Repeat step 3 using the Concentric layer 3 and Concentric center shapes until you have all the layers in place. 使用“同心圆第3层”和“同心圆中心层”形状重复步骤3,直到所有层均处于正确位置。
- The crust is the outermost concentric layer of the earth. It has an average thickness of thirty kilometers and is the thin, rocky veneer that constitutes the continents and the floors of the oceans. 地壳是地球的同心圆圈层的最外面一个圈层，它的平均厚度有30公里左右，薄薄的岩石圈层构成了大陆和洋底。
- The stem is reduced to a disklike structure, bearing concentric layers of fleshy leaf bases that comprise the food store. 由许多肥厚的肉质鳞叶包围扁平或圆盘状的地下茎，其中储藏着大量的营养物质。
- Like the core of earth, the mantle can also be divided into two concentric layers, the lower mantle and the upper mantle. 就像地球的核部一样。地幔也可分为两个同心圆圈层，下地幔和上地幔。
- The fleshy stalks or pseudostems formed by upright concentric layers of leaf sheaths constitute the functional trunks. 生长习性:香蕉是快速成长的多年生草本植物;因地下根茎.
- To change the radius of a concentric layer, drag a selection handle 要更改同心圆某一层的半径,请拖动选择手柄
- This layer of rock contains a lot of flint. 这一岩层中有大量燧石。
- To change the thickness of a concentric layer, drag the control handle 要更改同心圆某一层的厚度,请拖动内环上的控制手柄
- The inner layer of the wall of a spore. 孢子内壁孢子壁的内层
- There is a fine layer of dust on the desk. 桌子上有一层薄薄的尘土。
- The middle, usually fleshy layer of a fruit wall. 中果皮果皮中间通常含肉较多的那一层
- The bottom layer is a mixture of sand and clay. 最下面的一层是沙和泥的混合物。
- A fine layer of dust covers everything. 所有的东西都盖了一层薄薄的灰尘。
- A layer, as of doubled-over cloth or of paperboard. 一层一层，如折叠过的布料或纸板的
- A surface, layer, or mass of frozen water. 冰面冻结的水的面、层或块
- A thin layer of bone, membrane, or other tissue. 骨骼、粘膜或其它组织的薄层
- The centres of concentric circles coincide. 同心圆的圆心是一个。
- A thin, flat layer or scale, as that of a fish. 外表组织薄而平的一层或鳞状物，如鱼鳞
