Fluctuating
v. 波动（fluctuate的ing形式）
✅ 同义词
🔴 反义词
🗣️ 情景例句
Oh, leaving home is part of growing up.
呵 ，离开家是成熟过程的一部分。
Nothing brave, nothing have.
不入虎穴，焉得虎子。
Speculations about is nature have been going on for literally thousands of years,
人们对睡眠作用的种种猜测，确实有数千年之久。