Show them on the board how to draw a simple computer screen.

在黑板上给他们展示如何画一个简单的电脑屏幕。

The computer screen froze suddenly.

电脑屏幕突然冻结了。

The computer screen suddenly went black.

电脑屏幕突然变黑了。

I need to clean my computer screen.

我需要清洁我的电脑屏幕。

She stared blankly at the computer screen.

她茫然地凝视着电脑屏幕。

The computer screen suddenly flickered.

电脑屏幕突然忽明忽暗了一下。

The computer screen displayed a series of zeroes.

电脑屏幕上显示了一串零。

A mirror image appeared on the computer screen.

电脑屏幕上显示了一个镜像。

He always stares at the computer screen for too long.

他总是盯着电脑屏幕太久。

The computer screen seemed to freeze for a moment.

电脑屏幕似乎冻结了一会儿。