They take their responsibilities seriously. 他们认真对待自己的职责。
He has forfeited his right to be taken seriously. 他被取消了需要认真对待的权利。
Do not take it seriously -- he was only teasing. 别当真,他只是在戏弄你。
The Soviets possessed the greater preponderance of information, and the American scientists were unwilling to take it seriously. 前苏联方面掌握了巨大的信息优势,美国的科学家都不愿意当真。