连载的爱情小说的在架期一般只有四周。

Serialised romance novels generally have a shelf life of just four weeks.

youdao

有两架直升飞机在周围盘旋。

There were two helicopters circling around.

《柯林斯英汉双解大词典》

一架飞机等在机场，引擎已发动，而这只是诱饵中的一个而已。

A plane was waiting at the airport with its engines running but this was just one of the decoys.

《柯林斯英汉双解大词典》

Transplants require donors, and the donor organ is usually not at the same physical location that the recipient is and so jets like this one have become very important in connecting donors to recipients.

移植手术需要供体器官,而供体和受体,往往在不同地方,这就需要一架飞机,将器官由供体所在地送到受体所在地

耶鲁公开课 - 生物医学工程探索课程节选

Sometime after you've eaten, say you had this Snickers bar at lunchtime and you don't have time to get anything else to eat during the day, your blood glucose level will go down.

有时候你们吃完饭以后,午饭的时候你吃了士力架,在这一天当中你又没时间吃别的东西,你的血糖水平就会下降

耶鲁公开课 - 生物医学工程探索课程节选