它们吸食植物的汁液，直接造成损害，并间接地传播病毒病。

They cause damage directly, by consuming plant juices, and indirectly, by spreading viral diseases.

youdao

它们吸食植物的汁液，直接造成损害，并间接地传播病毒病。

They cause damage directly, by consuming plant juices, and indirectly, by spreading viral diseases.

youdao