The clouds have blocked the sun out.

云彩遮住太阳。

She quickly blocked out a sketch of the construction site.

她迅速画出地的草图。

I have blocked out a plan of study.

我已拟订个学习计划。

Block out this unimportant detail at the top of your picture.

在底片上把图像上部的个不重要的细节涂抹掉。

Then I heard footsteps on a stairs, and in a moment the thickish figure of a woman blocked out the light from the office door.

接着我听到楼梯上有脚步的声音，过儿个女人粗粗的身材挡住办公室门口的光线。