useful species造句

some useful species for biological control were introduced in detail
本文还对一些在生物防治上有利用价值的种类作了重点介绍。
for the first time a remote mountainside location will be the centre of top-level planning on issues such as the reintroduction of plants to their natural habitats and the development of sustainable production systems for medicinal and other useful species
该计划将涉及包括将植物从新引进到其自然生长地，以及开发药用物种和其它物种的可持续生产系统等方面的问题。
It's difficult to find useful species in a sentence. 用useful species造句挺难的