A true epithelial tissue is present only in a single layer of cells held together via occluding junctions called tight junctions.

真正的上皮组织仅存在于通过称为紧密连接的咬合带而保持在一起的单层细胞中。

Cracks at concrete floor-wall junctions.

水泥地面与墙壁连接处的裂缝。

Most volcanoes form at the junctions of tectonic plates.

多数火山是在地壳联结点上形成的。

Gap junctions serve as pathways of intercellular communication.

间隙连接是细胞间交流的途径。

The accident happened at one of the country's busiest railway junctions.

事故发生在该国一个极繁忙的铁路交叉点处。