Reciprocating action
[机] 往复动作
🧩 词语组成解析
[医] 交互的, 往复的
action
['ækʃən]
n. 行动，活动;功能，作用;手段;[法]诉讼;
🗣️ 情景例句
How much extra do I have to pay for that?
我还要另外付多少？
I was born in a little town not far from here.
我出生在离这儿不远的小城市里。
On the day before our departure, several bus loads of tourists descended on the town.
我们离开小镇的前一天，镇上来了几辆满载游客的公共汽车。