ONE PHRASE, IN CONTEXT
up and down
来回地;沿着某处到处寻找

GET TO KNOW THE MEANING
同一个表达,不同的语境。
01来回地;沿着某处到处寻找
IN A SENTENCE
We searched up and down the beach for the missing child.
我们沿着海滩来回寻找那个走失的孩子。
02上上下下
适合整体记忆的高频搭配,注意和上下文一起掌握。
IN A SENTENCE
The elevator moved up and down while technicians tested its new controls.
技术人员测试新控制装置时,电梯上下运行。
03上上下下;来回
IN A SENTENCE
The elevator carried guests up and down while the hotel staff moved luggage into the renovated rooms.
酒店员工把行李搬进翻新的客房时,电梯载着客人上下往返。
04上上下下;来回地
IN A SENTENCE
The children ran up and down the hallway while we waited for the elevator.
我们等电梯时,孩子们在走廊里跑上跑下。
