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
to buy a new house.
来买一栋新房子。
What time did you get to work yesterday morning?
你昨天早上什么时间上班？
Now let's go downstairs and have a cup of tea.'
来，咱们下楼去喝杯茶吧。”