Dummy piston
[机] 均压盘轮
🧩 词语组成解析
dummy
['dʌmi]
n. 仿制品;沉默寡言的人;笨蛋，蠢货;挂名代表，傀儡;
vt. 制作样本，制作样张;不吭声，缄口;〈美俚〉装聋作哑;替别人占领土地;
adj. 假的;摆样子的，做样品的;挂名的;虚设的;
piston
['pɪstən]
n. <机>活塞;
🗣️ 情景例句
I have worked hard at my major subject.
我对主修课特别用功。
You are right!
答对了。
I was so excited that I wanted to tell the whole world what we had found.
我激动得想要告诉全世界我们发现了什么。