Jianzi said in a stern voice: "Military command is no joke. If you can explain the reason, I will let you go."

简子严厉地说：“军令不是开玩笑，你讲得出道理就放过你；

youdao

Visibly composing himself, Saidan placed the silver shoulder plates upon Tirion's shoulders and spoke in a stern voice. "By the strength of the Light, may your enemies be undone."

萨丹将银制的肩甲穿在提里奥的肩膀上，用坚定的声音说：“以圣光的强大，愿你的敌人灰飞湮灭。”

youdao

The teacher spoke in a very stern voice and Timothy had to follow her to her room.

老师说得很严厉，蒂莫西只得跟她进房间。

youdao

"We have been fighting counterfeits for five years with some result, but now we have officially declared war on counterfeiting, " Mr. Vincent said in a stern voice.

ENGADGET: Sennheiser boasts anti-counterfeit efforts, unveils new authentication technologies