The only serious difficulty in this work is that it's sometimes dangerous to drive at night.

这项工作中的唯一难题是有时在夜里开车很危险。

youdao

Paul's only serious complaint with the lovely Gill, in person, was that she had brought along her mother.

保罗只是当面跟可爱的吉尔认真地抱怨了一声，因为她把她的老妈也带来了。

youdao

They believe that the best we can do is keep it at a reasonable level, and at present the only serious option for doing this is cutting back on our carbon emissions.

他们认为，我们所能做的最好的事情就是把它控制在一个合理的水平，而在这方面目前唯一重要的选择就是减少碳排放。

youdao

He resigned because he saw his resignation as the only way of solving a serious problem Jackson faced.

VOA: special.2009.01.01

People did say they were happy to have participated and only 2% said that they were sorry, but still serious damage could have been done and perhaps was done.

但确实有人说他们很高兴能参与实验,只有2%的人说他们感到难过，但这个实验可能对电击者造成严重的伤害,也许已经造成了。

耶鲁公开课 - 心理学导论课程节选

Only two percent were serious.

VOA: special.2009.08.06

The Rolling Stone article indicates that her only serious problem is her inability to find work.

FORBES: Why Janis Adkins Should Be Angry At Ben Bernanke

Egypt's courts are emerging as the only serious check to the huge power of the state.

ECONOMIST: Egypt

Dr Dean is the only serious candidate to have opposed war in Iraq from the start.

ECONOMIST: Howard Dean