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
Certainly. What time would you like?
好的，要几点叫你？
His wife died a year ago. Now he lives alone.
他妻子去年去世了。现在他一个人住。
Fish love swimming round the rocks and through holes in them.
鱼喜欢绕着岩石和穿石洞游水。