Pdf file
PDF文件
🧩 词语组成解析
abbr. 概率分部函数（Probability Distribution Function）
file
[faɪl]
vt. 提出（离婚诉讼或其他讼案）;把…归档;用锉锉;发稿，寄给报社;
vi. 发送（报道给报社）;排成一行行走;提出申请;
n. 文件（夹）;档案;纵列;锉刀;
fil线+e → 用线穿成的→ 档案
🗣️ 情景例句
And very good-looking, like his mother.
也很漂亮 ，像他妈妈。
To trip and fall
绊倒
Only a few kilometres. I think it's about seven. OK. We're all here, now.
谩Ｎ颐嵌嫉狡肓恕?