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
He studied harder to improve his English.
他更加努力提高英语水平。
Did you hear that we would have a holiday next work?
你有没有听到下周可以休假的事？
Can we do anything to help?
用我们帮忙吗？