The sun, is also variable over a long term: its heat output goes up and down in cycles, the latest trend being downward.

太阳在长期内也是变化的：它的热量输出在周期中有上升，也有下降，最近的趋势是下降。

youdao

The strain in a long term of years has told severely on his health.

长年的操劳严重地影响了他的健康。

《新英汉大辞典》

I don't want to do anything that will involve me in a long-term commitment.

我不想做任何会使自己做出长期承诺的事情。

《柯林斯英汉双解大词典》

And,she hopes that more travelers of all nationalities will see themselves as ambassadors who have a long term responsibility to the places they visit.

VOA: special.2009.04.22

I don't mean make it always in terms of an IPO but have a long term life.

我说的成功并不限于上市，公开募股什么的,而是让公司长久的运营下去。

斯坦福公开课 - 微软CEO-Steve.Ballmer谈科技的未来课程节选

you're going to end up developing a cramp or a long term injury.

到最后你会抽筋，或者会造成长期的伤害。

健康生活 - SpeakingMax英语口语达人

Traditional oil and gas wells are a long term capital investment similar to an office building.

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Automatic technology upgrades come with a long term contract, which typically run three to five years.

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Dickey is a short term fix to a long term problem for the New York Mets.

FORBES: Trading R.A. Dickey could be the Gateway to Greener Pastures for the New York Mets