Serious and cautious
严肃───serious;谨慎───cautious
There is a danger of serious contamination from radioactive waste.───放射性废弃物有严重污染的危险.
Loss of health is more serious than loss of wealth.───健康的丧失比财富的损失更为重要.
The consequences could be serious.───后果可能是严重的。
You're joking. Are you serious?───你在开玩笑吧。你是认真的吗？
Keep some blood plasma back for the serious cases.───留一些血浆给重病号.
He's quite a serious person.───他是一个相当严肃的人。
The display juxtaposed images from serious and popular art.───这次展览将严肃艺术和通俗艺术的图片一起展出.
He was supposed to be a serious performer, but the crowd laughed him off the stage.───他被认为是严肃的演员, 但观众却把他哄下了台.
They pose a serious threat to security.
By this time the riots were getting serious.
Even a superficial inspection revealed serious flaws.
A superficial injury is not serious.
He prefers light fictions to serious novels.