I had a mental image of what she would look like.

我想象出她的大致模样。

To form a mental image of; visualize.

构想，想象使…形成视觉形象。

To form a mental image of; visualize.

构想，想象使…形成视觉形象收藏。

It creates in the mind a mental image of weakness.

它在脑中形成的影像是负面的。

Everyone had a clear mental image of the character.

每个人的脑海中对该角色都有一个清晰的图像。