I'd like to know the flight duration.

我想了解一下空中飞行时间。

youdao

It's (relatively) simple to re-create the paper plane that set the flight-duration record. Use a letter-size sheet.

折一架创造了最长飞行记录的纸飞机还是相对简单的，只要一张信纸大小的纸就可以。

youdao

It's (relatively) simple to re-create the paper plane that set the flight-duration record. Use a letter-size sheet.

折一架创造了最长飞行记录的纸飞机还是相对简单的，只要一张信纸大小的纸就可以。

youdao