Serenest
serene（沉静的, 宁静的, 安宁的）的最高级形式
🗣️ 情景例句
No admittance except on business.
非公莫入。
What were you doing this time last year?
去年这时候你在干什么？
Most cats remain suspicious of humans all their lives.
在它们的一生中，大多数猫都对人存有戒心。