This is a pressing issue because many people are becoming unemployed due to the COVID-19 pandemic.
这是一个紧迫的问题,因为许多人由于新冠肺炎疫情而失业。
A real and pressing issue is that many plant species have not yet been cataloged, and so their place in the ecosystem is unknown.
一个现实而紧迫的问题是,许多植物物种还没有被编目,因此它们在生态系统中的位置是未知的。
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