to stack up
01
堆叠, 摞起来
to neatly arrange objects, usually in a vertical arrangement, forming piles
Transitive: to stack up sth
语法信息
形态构成
短语
动作动词
规则
可分离
小品词
up
基本动词
stack
现在时
stack up
第三人称单数
stacks up
现在分词
stacking up
一般过去时
stacked up
过去分词
stacked up
例子
The librarian worked diligently to stack up the returned books in their designated places on the shelves.
图书管理员勤奋工作，将归还的书籍堆叠在书架上的指定位置。
02
堆积, 在空中排队
(of aircraft) to fly over an airport at different heights, waiting for specific landing instructions
Intransitive
Transitive: to stack up an aircraft
例子
Due to heavy air traffic, planes had to stack up over the airport, causing delays in landing.
由于空中交通繁忙，飞机不得不在机场上空盘旋，导致降落延误。
