Letter reference
[经] 书信备查
🧩 词语组成解析
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
It's getting late.
时间不早了。
Laws catch flies and let hornets go free.
法网只捕蝇，黄蜂由它去。
It will be found that the weight moves but slightly or not at all.
结果会发现，重物是动了，但动得很小，甚至没动。