“孔眼”造句

这工具的两边各有一对孔眼.
There are twin holes on each side of the instrument.

螺栓的孔眼完全合适.
The holes for the bolts register perfectly.

迎着光看时，就会发现椭圆形小叶子上有微小的孔眼。
When held to the light the small oblong leaves are seen to possess tiny perforations.