He said all this for keeps.
他是严肃认真地讲这番话的。
And I wish to emphasize the seriousness of these proposals.
我要强调我这些建议是严肃认真的。
a soBer thoughtful man
一个严肃认真的体贴的男人
They were sincere and hardworking people, and all very clever.
他们都严肃认真，聪明勤奋。
Now he knows I mean business.
现在他了解我是严肃认真的。
The serious man considers such things as parties to be complete futility.
严肃认真的人认为参加舞会这类事毫无意义。
At his most hesitant he was also at his gravest.
他最吞吞吐吐的时候，也就是最严肃认真的时候。
quality newspaper
ph.1. 高级报纸(指版面、内容都很严肃认真的大报)
So they swore again with dread solemnities.
于是他们又非常严肃认真地发了一回誓。
The father decided to have a heart to heart talk with his son about smoking.
父亲决定和儿子进行一次严肃认真的有关吸烟问题的谈话。
(cause sb to)become calm and serious(esp after a period of irresponsible or frivolous behaviour)
（使某人）冷静而严肃认真（尤指有马大哈之类举动之后）
She would plunged straight from the sublime to the ridiculous.
她会一下子从一个严肃认真的人变成一个愚昧可笑的人。
He struck into a laugh when we were talking seriously about the matter.
我们正在严肃认真地谈论问题，他们突然大笑起来。
He took his responsibilities as a father seriously but in matters of discipline was rather too free with his hands.
他严肃认真地履行做父亲的责任，但在管教方面，动辄喜欢打人。
She was supposed to be a serious singer, but the crowd laughed her out of the theatre.
她应该是个严肃认真的歌唱家，可是观众用哄笑把她赶出了剧院。
in sober [ good ] sadness
非常认真地, 非常严肃地
serious reflection
认真的思考，严肃的反省
Dally not with women or money.
对待女性要严肃，对待金钱要认真。