信纸\n【机】 信笺

也是这样一个有着洁净月色的晚上，我铺开信纸，我的笔尖是随着感觉滑动的。

letter of admission

certificate of authorization【法】;letter of authorization【法】;power of attorney【法】

letter of guarantee

usance letter of credit

letter

letter of confirmation

four-letter word

letter of recommendation