It's interesting that he sent me the book twenty days before the deadline for my book.

有趣的是，在距离我书的截止日期20天前他把那本书寄给了我。

《柯林斯英汉双解大词典》

You must return the book in fifteen days.

你必须在十五天内归还书籍。

youdao

Regular airlines may offer special rates if you book your flights in advance and fly on certain days of the week when they don't expect to have full planes.

如果你提前订好机票，并且在一周中预计不会满员的特定日子乘机出行，通常情况下，航空公司都会提供特价。

youdao

It is said that Mary memorized a complete book about the Latin language in three days.

VOA: special.2010.06.27

Her book "Some of the Days of Everett Anderson" became the first in a series of books about a young African-American boy growing up in the city.

VOA: special.2010.04.18

In 1956 he landed on The Economist and, luckily for us, stayed there, until and beyond his retirement, contributing a book review days before he died.

ECONOMIST: John Midgley

Jerry Jenkins, co-author of the "Left Behind" book series about the Rapture within the Christian Bible's end-of-days Book of Revelation, doesn't completely agree with Hall's assessment.

CNN: Apocalypse believers' big finish predictions vary

When you buy for less than book value these days, you don't get prime properties.

FORBES: Faux Buffett