They are important and necessary feeding and breeding grounds for migratory birds.

他们是候鸟必不可少的觅食和繁殖地，十分重要。

youdao

To control and eradicate the exotic and invasive plant Spartina alterniflora is important and necessary for biodiversity conservation management.

控制和根除外来和入侵植物互花米草对生物多样性保护管理来说是重要和必要的。

youdao

They want to make it clear to the public that they are doing an important and necessary job.

他们要向公众表明，他们在做一件重要而又必要的工作。

youdao

All are important and necessary for different stages and needs in the development process.

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This would undercut important and necessary civil rights cases throughout the nation.

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How much was important and necessary vs.

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