For our first simple effect, we will draw an alpha-blended (semitransparent) circle at a fixed position over the video stream. The first step is to add the drawing functions to the screen.c.

对于第一个简单效果，将在视频流中的固定位置绘制一个阿尔法混合(半透明的)圆。

youdao

The Mac release was only alpha quality, but it was still a major step forward in making OpenOffice a real competitor to Microsoft Office.

虽然 Mac版本只具有内部测试版品质（alpha quality），但仍然极大推动了OpenOffice，使其离成为 Microsoft Office 有力竞争者这一目标更进一步。

youdao

The Mac release was only alpha quality, but it was still a major step forward in making OpenOffice a real competitor to Microsoft Office.

虽然 Mac版本只具有内部测试版品质（alpha quality），但仍然极大推动了OpenOffice，使其离成为 Microsoft Office 有力竞争者这一目标更进一步。

youdao