GbEng
这位老人是小麦病虫害方面的权威。 This old man is a leading authority on wheat diseases.
一种尚未搞清的病虫害突然侵袭了这一带的庄稼。 An unknown disease suddenly attacked the crops in this area.
流胶现象，流胶病某些植物上，如甘蔗及一些果树，形成胶质斑块的病理现象，由病虫害、微生物或恶劣的气候条件侵袭而引起 The pathological formation of patches of gum on certain plants, such as sugar cane and some fruit trees, resulting from attack by insects, microorganisms, or adverse weather conditions.