視頻對話：
No, I'm gonna have to file an extension.
沒有，我要申請延后繳。
You already filed an extension.
你已經申請過延期了。
Yeah, well, I gotta file another one.
是，我還要再延期一次。
That's... It's $650. I'll have it in the next month.
一共是640美元，我下個月就有了。
本期學習詞匯：
file
vt.提出（離婚訴訟或其他訟案）；把……歸檔；發稿；
vi.發送（報道給報社）；排成一行行走；提出申請；
file away 存檔（備查）； 銼掉； 銼削
file away the report 將報告歸檔
例句：
1. When Robert Merton invented the "Black-Scholes" formula back in the early 1970s, he never bothered to file a patent for the idea.
當羅伯特-默頓(Robert Merton)在上世紀70年代初設計出"布萊克-斯科爾斯(Black-Scholes)"模型時,根本沒想過要去給這個想法申請一個專利。
2. I filed for divorce on the grounds of adultery a few months later.
幾個月后我以通奸為由提起了離婚訴訟。
3. She paused as the group of children filed out of the house.
那群孩子從房子里魚貫而出時，她停了下來。