Supporters say open source software is more secure, cheaper to buy and maintain and easier to customize.

拥护者认为开放源代码软件更安全，购买价格及维修成本也更为低廉，并且更容易定制。

《柯林斯英汉双解大词典》

They are difficult to maintain and thus need more operating costs.

他们很难维持,因此需要更多的运营成本。

youdao

youdao

"All genes are encoded by DNA and the DNA is present in the chromosomes in the cell nucleus and telomeres, they are the ends of the chromosomes and they have an important function to protect the chromosomes and maintain the integrity of the chromosomes."

VOA: special.2009.10.07

But the second is a desire to attract and maintain the divine presence, the continued presence of God in the sanctuary.

第二个是一种欲望，想要吸引和保持，上帝长久存在于圣所内的欲望。

耶鲁公开课 - 旧约导论课程节选

The similes work not to sew everything up but make it impossible for us to maintain anything like the official position on a moral distinction between heavenly good and satanic evil.

这些比喻不是为了简单的拼凑，而是让我们不能,维持住任何天堂之善与撒旦之恶之间的,清晰的官方界限。

耶鲁公开课 - 弥尔顿课程节选

It said the old buildings were expensive to maintain and it planned to modernise infrastructure.

BBC: Whittington Hospital: 'Shock' over site cut plans

Economic incentives are also needed for the private sector to maintain and improve those energy services.

ECONOMIST: A survey of Energy

They are easy to start, less work to maintain and often cover more ground than just investing.

FORBES: Putting the FUN into Finances!