Sparkplug
vt. 倡导, 激励\\nn. 火花塞, 中坚
✅ 同义词
🗣️ 情景例句
Lacks courtesy is ill-mannered.
不礼貌，举止不当。
This is a revolutionary new product.
这是一种革命性的新产品。
Quite by accident. I moved a few peas and there it was.
很偶然。我挪了几颗青豆就发现了。