1.
They are hollow, which makes them very light.
它们是空心的, 所以很轻。
2.
It will be massive or hollow.
它可以是实心的，也可以是空心的。
3.
A iron bar is solid, a pipe is hollow.
铁条是实心的，管子是空心的。
4.
A tennis ball is hollow,but a base ball is solid.
网球是空心的，但棒球是实心的。
5.
A bar of iron is solid; a pipe is hollow.
铁棍是实心的, 而管子是空心的。
6.
The pillars look solid, but in fact they're hollow.
那些柱子看上去是实心的，其实是空心的。
7.
On No Title Poems of Li shangyin;
李商隐无题诗的空白结构及心理空间
8.
cellular girder
格形[空腹, 空心]梁
9.
It erodes your spirit, carving out an emptiness inside.
羞愧侵蚀你的心灵，把你的内心挖空。
10.
The entire cell aster with the exception of the centrosome.
空心体，吸收体除中心体外的整个星体
11.
Dynamic analysis of structural damping of solid roller and hollow roller
实心和空心滚子结构阻尼的动态分析
12.
The mind,in fact,is as empty,as impermanent,and as transient as a dream.
我们的心其实是空幻的、无常的，如梦般空虚短暂。
13.
Analysis of the Relationship between the Actual Space of Fortress Besieged and Readers Mental Spaces;
《围城》的实质空间与读者的心理空间分析
14.
hollow section guide roller
空心导布辊（由中空的圆柱形金属管制成）
15.
Joe's father hollowed out a pumpkin to make a jack-o'-lantern
乔的父亲把一个南瓜挖空，做了个空心灯。
16.
3D FEM Analysis of Mechanical Properties in Prestressed Lightweight Aggregate Concrete Hollow Beam;
预应力LWAC空心板梁力学性能的空间有限元分析
17.
The Study on Huge Welded Hollow Sphere Joints of Complex Spacial Steel Structure;
复杂空间钢结构巨型焊接空心球节点的研究
18.
Comparison of life and psychological status of the elderly between families with children absent and families with children;
城市空巢与非空巢老人生活和心理状况的比较