1.
Impenetrable by bullets.
防弹的子弹射不透的
2.
The curtain is thick and you can't see through.
窗帘挺厚，你看不透的。
3.
Impenetrable by light; neither transparent nor translucent.
不透光的不能被光线穿透的；既不透明也不是半透明的
4.
closed so tightly as to be airtight or watertight.
关闭的很紧的，不透气的或不透水的。
5.
Impermeable by gas.
不透气的气体不能透过去的
6.
Materials through which no radiation is propagated are called opaque.
辐射线不能透过的物质叫不透明体。
7.
a milky white translucent or opaque glass.
一种乳白色的半透明或不透明的玻璃。
8.
Opacity: Degree of obstruction to transmission or reflection of light.
不透明度:阻碍光线透过的程度。
9.
Lamp shades are translucent but not transparent.
灯罩是半透明而不是全部透明的。
10.
Emergent light is no longer continuous.
透过的光不再是连续的。
11.
differential transparency of atmosphere
不同层次的大气透明度
12.
The sun's rays could not wedge their way through the barrage of foliage.
阳光透不过树叶的屏障。
13.
Some objects do not allow light to go through them.
有些物体是不透光的。
14.
Film stored in lightproof containers.
装在不透光盒的胶片
15.
of such close construction as to be impermeable.
结构紧密以至不透水的。
16.
hearting concrete
不透水的心墙混凝土
17.
Likely to cause choking.
可能使人透不过气来的
18.
the opacity of frosted glass
磨砂玻璃的不透明性.