Sternest
stern（严厉的, 严峻的）的最高级形式
🗣️ 情景例句
thank you very much.
十分感激你。
The effect speaks, the tongue needs not.
事实胜于雄辩。
So their entry into this flat was apparently not the burglars' first job that day and they must have been disturbed.
很明显，闯进这套公寓的窃贼那天并不是首次作案，而且他一定受了惊吓。