The way I see it , you have three main problems.

我认为你有三个主要问题。

《牛津词典》

Despite anything the science of medicine may have achieved, the immune system is our main defence against disease.

不管医疗科学已取得了什么样的进步，免疫系统仍是我们抵抗疾病的主要防御手段。

《柯林斯英汉双解大词典》

The gases that may be warming the planet will have their main effect many years hence.

这些可能正在使行星变暖的气体，其重要影响将在许多年之后显现。

《柯林斯英汉双解大词典》

The research suggests that to grow, they have to be able to export the hormone into the main stem.

VOA: special.2009.10.13

So you have three main trade routes that cross the country, and they were used by trading caravans that would carry gold and grain and spices and textiles and other goods between Egypt and the rest of the Fertile Crescent and up into Asia Minor.

你有三条主要道路穿过这个国家，他们被通商的车队所使用,驮着金子，谷物，香料，纺织品和其他货物,在埃及与其他肥沃的伊斯兰教国家间,向上到达小亚细亚。

耶鲁公开课 - 旧约导论课程节选

Yeah, I actually, we have a concert here on Main Green once a year called "Spring Weekend"

是的，我们每年都会在梅因格林举办一场音乐会，叫做“春日周末”，

校园生活 - SpeakingMax英语口语达人

And so the main message I have tonight and the main message I have to you is congratulations on a job well done.

WHITEHOUSE: Ending the War, Saluting the Troops

For years now we have had successive governments whose main concerns have centred around London and the South East of England.

BBC: Does England need regional assemblies?

Several other arrests have been made, though the other three main suspects have not yet been found.

ECONOMIST: Hunting the London bombers, shooting an innocent man | The