white cardboard

基本解释

However I looked carefully and could easily see the white cardboard.
然而我小心地看和可以容易地白色的厚紙板。
Simply use a piece of white cardboard or crafting foam attached to your flash head.
簡單地把白色紙板或塑料泡沫固定在閃光燈上就可以了。
In recent year, PA polyamide, white cardboard, electronic mesh screen and other projects of relatively high technical levels have been launched into production one after another.
近年來，錦綸、白卡紙、電子網目板等技術水平較高的項目相繼投産。

The box of "genre"—you can imagine it as a long, white cardboard box, the kind collectors store plastic-bagged back issues inside—is easy to close, and hard to see out of, once you're inside it.
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