Only a handful of databases record the abundance of insects over a long time—and not enough to judge long term population trends accurately.
老师好,请问and 后只有一个副词enough吗?它的完整句子是什么样?
Only a handful of databases record the abundance of insects over a long time—and (they are省略了)not enough to judge long term population trends accurately.
they指代”“a handful of databases”
They are not enough to judge long term population trends accurately.
用少数几个数据库去准确判断长期的种群趋势是不够的
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