This is the 515th most frequent Chinese word.
大量
A large amount.
In this sentence, '大量' is used as an adjective to describe the noun '邮件', indicating a significant quantity.
今天我们接收到大量的邮件。
Today, we received a large amount of emails.
Here, '大量' modifies '新物种', emphasizing the considerable number of items discovered.
科学家发现大量新物种。
Scientists discovered a large number of new species.
'大量' in this context emphasizes the significant extent of the effort required, underlining the substantial amount needed.