Relatively few foresters or tree breeders consider the presence of edaphic ecotypes . 考虑到存在土壤生态型的林学家或树木育种家相当少。
2.
The details of pine shoot development have recently become of more importance to foresters . 松树枝梢发育的细节近来变得对林学家们更为重要了。
3.
Local foresters worry about the possibility of serious disease or insect outbreaks which might result from such monoculture . 当地的林学家们很烦恼，因为这样单一栽植的结果，可能发生严重的病虫害。
