He is recognized as a pioneer of special effects photography predating digital imaging.是什么意思？

He is recognized as a pioneer of special effects photography predating digital imaging.

他被视为早于数字图像的特效摄影开拓者.

he

pron. 他，它，一个人；n. 雄性动物；

例句
Logic had prevailed and he had abandoned the idea.
最终理智占了上风，他打消了那个念头。

is

vt.& vi. 是（be的三单形式；n. 存在；

例句
Bollinger 'RD' is a rare, highly prized wine.
博林格RD香槟是一种名贵的备受推崇的葡萄酒。

recognized

adj. 公认的，经过验证的；v. 认出( recognize的过去式和过去分词 )，承认[认清]（某事物），赏识，承认…有效[属实]；

例句
The patient recognized one of the women as the apparition she had seen.
病人认出其中一个女的是她曾见过的幽灵。

as

adv. 同样地，一样地，例如；prep. 作为，以…的身份，如

例句
As far as I can recall, Patti was a Smith.
我记得帕蒂是姓史密斯的。

pioneer

n. 拓荒者，开发者，先驱者，创始者；vt. 开拓，开发，做（…的）先锋，提倡；

例句
What they lacked in speed those pioneer pilots made up for by flying only a few feet above the ground.
那些飞行员先驱通过离地仅几英尺的低空飞行，弥补了飞行速度的不足。

of

prep. 关于，属于…的，由…制成；aux. 助动词 [非标准用语、方言] =have [主用于虚拟语气]；

例句
He did have a real knowledge of the country...
他对该国的确知之甚多。

special

adj. 特殊的，专门的，专用的，重要的；n. 专车，特价，特刊，特约稿；

例句
He's already altered several of the proposals in his economic plan to accommodate demands of special interests.
他已经改动了经济计划中的几项提议以迁就特殊利益集团的要求。

effects

n. 动产，财物，家财，结果( effect的名词复数 )，效果，感受，个人财产；

例句
You could only really tell the effects of the disease in the long term, and five years wasn't long enough...
真的，这种病只能在很久以后才能看出它的影响，而5年的时间还不够长。

photography

n. 摄影，摄影术，一组照片；

例句
I wish I'd discovered photography when I was younger...
我要是早点接触到摄影技术就好了。

predating

v. 提早日期，居先( predate的现在分词 )；

例句
He also propounded the Heliocentric theory of gravitation, thus predating Copernicus by almost one thousand years.
他也提出以引力作用为基础的日心说, 比哥白尼早了几乎一千年.

digital

adj. 数字的，数据的，手指的，指状的；n. 手指，（钢琴等的）琴键，数字；

例句
The analogue signals from the video tape are converted into digital code.
采自该录像带的模拟信号被转换成数字代码。

imaging

n. 成像，镜像，映像，透视显像，意像疗法；v. 设想，想象(image的ing形式)；

例句
...thermal imaging cameras.
热成像照相机