The first thing to do is to go the Channel palette and then holding Command(MAC)/Control(PC) click on the thumbnail of the Alpha 1 to load the channel as selection.是什么意思_The first thing to do is to go the Channel palette and then holding Command(MAC)/Control(PC) click on the thumbnail of the Alpha 1 to load the channel as selection.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句