纵深

depth (from front to rear) / depth (into a territory) / span (of time) / (fig.) depth (of deployment, progress, development etc)

old variant of 深[shen1]

deep / depth / deeply / (of a color) dark / deep / rich

deep (lit. and fig.)

warp (the vertical threads in weaving) / vertical / longitudinal / north-south (lines of longitude) / lengthwise / to release / to indulge / even if