An anonymous letter
n. 匿名信
🧩 词语组成解析
an
[æn]
art. 一（在元音字母前代替不定代词a）;一任一某一;一个;
letter
['lɛtɚ]
n. 信;证书，许可证;字母，文字;字面意义;
vt. 用字母标明;写字母于;加标题;
vi. 写印刷体字母;
🗣️ 情景例句
He bases his arguments on facts.
他的理论以事实为根据。
But we cannot afford to depend on tradition alone.
但是我们不能靠吃老本过日。
As long ago as the fourteenth century,
早在14世纪，