名词
中文翻译：信封纸
同义词：
['信封纸，信封用纸例句：1. The envelope paper is too thin', "it can't hold the letter inside.（信封纸太薄了，不能把信放进去。）"]
例句：
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1. The envelope paper is too thin, it can't hold the letter inside.
信封纸太薄了，不能把信放进去。
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2.She carefully folded the envelope paper and put it in her bag.
她小心地折叠信封纸并放进她的包里。
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3. I need to write a letter by hand, so I need some envelope paper.
我需要亲手写信，所以我需要一些信封纸。