1、
a yellow filter is placed in front of the camera lens to assure that no blue light will be imaged.
为了不使蓝光进入相机而成像，可在相机的透镜前加一黄滤色镜。
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2、
You might use a yellow filter to improve the clarity of a hazy horizon.
可以使用黄色滤光器让模糊的视野更加清晰。
柯林斯高阶英汉双解学习词典
3、
The liquor is light yellow, the dextrin is relatively less and easy to filter.
糖化液色泽浅黄，糊精含量较少，易于过滤。
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