Bandpass Filter
IR Pass Filter
IR Cut FilterSome birds aren’t meant to be caged.
I have to remind myself that some birds aren’t meant to be caged. Their feathers are just too bright.
我不得不提醒自己，有些鸟儿是注定不会被关在笼子里的，它们的每一片羽毛都闪耀着自由的光辉。
—Movie:The Shawshank Redemption
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