The conception of the picture is undeveloped.

这幅画的构思不成熟。

Don't expose undeveloped film to light.

不要把冲洗的胶卷暴露在光照下。

The karst depression belongs to the accumulative area of surface water and subdrainage area of subsurface water, the karstification is relatively week, and reservoirs are undeveloped.

岩溶斜坡和岩溶洼为表水汇集区及下水排泄区，岩溶作用相对较弱，储层不发育。