To take an extreme example, farmlands dominated by a single crop are so unstable that one year of bad weather or the invasion of a single pest can destroy the entire crop.(举个极端的例子,以单一作物为主的农田是如此不稳定,一年的坏天气或单一害虫的入侵可以摧毁整个作物。)
This is a pest.(这是只害虫。)
Each year ten percent of the crop is lost to a pest called corn rootworm.(每年有10%的作物受损于一种叫做玉米根虫的害虫。)
This kind of insecurity make women think you're a pest.(这种不自信会让女人觉得你很烦。)
Scientists from the UK's Centre for Overseas Pest Research, evaluate mass trapping of the cotton leafworm.(来自英国海外害虫研究中心的科学家们对棉叶虫的大规模诱捕进行了评估。)
Ragwort was accidentally introduced to New Zealand in the late nineteenth century and, like so many invading foreign species, quickly became a pest.(19世纪末,狗舌草被偶然引入新西兰,像许多入侵的外来物种一样,它很快就变成了一种有害生物。)
I don't want to become a pest.(我不想成为一个讨厌的人。)
This is almost a pest-control service.(这几乎是一项虫害防治服务。)
Don't be a pest or a troublemaker this week.(本周,不要制造麻烦,不要惹人讨厌。)