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
How did you feel?
感觉怎么样？
I've had this cough for a week now.
我这样咳嗽已经一周了。
Please sign here to show that you have received the money.
请在这儿签字以表明你已收到这笔钱。"