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
Their life together has been wonderfully happy.
他们在一起的生活极为幸福。
Her socks is under the night stand.
她的短袜在床头柜下面。
Is there anything I can do for you?
我能为你做点什么吗？