1.Natural causes include drought, flooding, unfavourable weather conditions, plant disease, and insect infestation.
天然原因包括干旱、洪水泛滥、天候异常、虫害和植物疾病等。
2.Plant is following guidelines set forth in Division's sanitation manual. No evidence of insect infestation found in any area of the plant.
厂房符合区域公司的卫生手册的指南。厂房内任何区域未发现害虫的痕迹。
3.to protect crops from devastating insect infestation,
保护庄稼免受毁灭性虫灾的
4.Cereals and pulses; Determination of hidden insect infestation; Part 2 : Sampling
谷类和豆类.潜在虫害的测定.第2部分：取样
5.Insect infestation and acorn fate in Quercus liaotungensis
昆虫寄生对辽东栎种子命运的影响