Sparkplug
vt. 倡导, 激励\\nn. 火花塞, 中坚
✅ 同义词
🗣️ 情景例句
You are not going to be able to move after this and the aerobics class.
你会动都动不了的。在你做完这个后又去上有氧运动课之后。
To know everything is to know nothing.
事事皆知，事事不懂。
I'm afraid that Jim will miss a lot of his lessons.
恐怕这么一来，吉姆要缺很多课了。