The combination of controlling insects and resin tapping provides a well way to apply the method for a longer period.

治虫和采松脂相结合，更是为长时期采用这种方法提供了良好的途径。

youdao

The combination of controlling insects and resin tapping provides a well way to apply the method for a longer period.

治虫和采松脂相结合，更是为长时期采用这种方法提供了良好的途径。

youdao