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
Consider the cost before you decide.
你决定前要先考虑费用问题。
I'm an American by birth.
我是土生土长的美国人。
I crossed the street to avoid meeting him, but he saw me and came running towards me.
我穿过马路以便避开他，但他看到我并朝我跑过来。