Piston action
[电] 活塞作用
🧩 词语组成解析
piston
['pɪstən]
n. <机>活塞;
action
['ækʃən]
n. 行动，活动;功能，作用;手段;[法]诉讼;
🗣️ 情景例句
I made enough for an army.
我煎了一大堆。
What is the total circulation of this publication.
这家刊物总发行量多少？
He was obviously very nervous and for some minutes stood awkwardly before the microphone.
他显然非常紧张，局促不安地在麦克风前站了好几分钟。