Serenest
serene（沉静的, 宁静的, 安宁的）的最高级形式
🗣️ 情景例句
When the bough breaks,
树枝若折断
We've only sold our product at trade fairs, not in an on-going sales campaign.
我们的产品只在商展时展售，而没有办促销活动。
Have you seen our new packing specifications?
你看过我们新的包装指示了没有？