1·There is no pest here.
这里没有害虫。
2·The destiny of the pest in the chestnut is not known before reaching the destination.
栗子中害虫的命运在到达目的地之前是未知的。
3·The cane toad itself became a pest and has destroyed much of the wildlife on that continent.
蔗蜍本身变成了一种害虫，并且已经破坏了那片大陆上的很多野生动物。
4·This sea-water also kills off the greedy giant apple snail, an introduced pest that feeds on young rice plants.
海水也杀死了贪婪的巨头苹果蜗牛，这种外来害虫以水稻幼苗为食。
5·The cane toad was introduced back in 1935 to control an insect pest that was destroying Australia's sugarcane plantations.
蔗蜍早在1935年就被引进，以控制一种破坏澳大利亚甘蔗种植园的害虫。
6·At the same time, this sea-water also kills off the greedy giant apple snail, an introduced pest that feeds on young rice plants.
与此同时，海水也杀死了贪婪的巨型苹果蜗牛，一种以水稻幼苗为食的外来害虫。
7·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。
8·Short-term effects include the disturbances directly associated with the action of the pest, which may cause the defoliation, loss of vigor, or death of trees.
短期影响包括与害虫活动直接相关的干扰，可能导致树木落叶、失去活力或死亡。
9·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。
10·In the late 1960s, when Sri Lanka's flourishing coconut groves were plagued by leaf-mining hispides, a larval parasite imported from Singapore brought the pest under control.
20世纪60年代末期，当斯里兰卡繁荣的椰子果园被潜叶昆虫侵扰时，一种从新加坡引进的寄生幼虫将这种害虫控制住了。