It was disappointing, but it is not serious.

这令人很失望，但是情况不严重。

youdao

It is not serious if you are several minutes late, but it may cause a bad result.

你迟到几分钟算不上严重，但可能会造成坏结果。

youdao

Inspector: It is not serious, you just had a cold. We can offer you some medicine.

检疫工作人员：你没有什么大事，只是感冒，我们可以为您提供一些药品。

youdao

CDC spokesman Christopher Cox says though the idea is well-intentioned, it is not a good way to protect against serious illness.

VOA: standard.2009.12.18

He said it is a serious international problem that should be addressed broadly and can not be solved entirely by military means.

VOA: standard.2009.04.13

"What was told in Tbilisi,I think, that as far as it is not connected to any real moves made by the Obama administration it is nothing serious or the Kremlin."

VOA: standard.2010.07.05

Although Barkley openly admits to his problem, he claims it is not serious since he can afford to support the habit.

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It is not serious, not sensible, not dignified, just BBC silly.

BBC: NEWS | Entertainment | BBC defends Churchill sculpture

It is not a serious work of economic analysis.

NPR: Immigrants Tend To Complement, Not Replace American Jobs