园丁注意到玫瑰丛上有一只蚜虫。

The gardener noticed an aphid on the rose bush.

蚜虫的侵扰可以严重损害农作物。

Aphid infestations can damage crops significantly.

一只瓢虫一天可以吃很多蚜虫。

A ladybug can eat many aphids in a day.

瓢虫是蚜虫的天敌。

Ladybugs are natural predators of the aphid.

在有利的条件下，蚜虫可以迅速繁殖。

An aphid can reproduce rapidly under favorable conditions.

农民使用天然喷雾来控制蚜虫的数量。

The farmer used a natural spray to control the aphid population.

蚜虫的天敌是瓢虫。

The natural enemy of aphids is ladybugs.

园丁在植物上喷洒杀虫剂以杀死蚜虫。

The gardener sprayed insecticide on the plants to kill the aphids.

园丁注意到玫瑰丛上有蚜虫的大量滋生。

The gardener noticed an infestation of aphids on the rose bushes.

蚂蚁和蚜虫之间的关系有时被认为是寄生。

The relationship between ants and aphids is sometimes considered parasitism.