To unfold gradually.

逐渐展开。

To make more complete.

使更完全。

To cause to grow.

使生长。

To treat (a photographic plate or film) with chemicals so as to bring out the picture.

使(底片)显影；冲洗。

To show signs of.

出现；显露。

To bring out the economic possibilities of (esp. land or natural substances).

开发(尤指土地或自然物质的经济价值)。

To advance from one stage to another.

进展；发育。

To become gradually apparent; become known.

披露；显示。

To appear on a film or photographic paper.

显像。