复数： greenfly greenflies

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Greenfly can literally suck a plant dry .

蚜虫的确能把一株植物吸干。

I 'll have to spray the roses with insecticide to get rid of the greenfly .

我必须给玫瑰花喷射杀虫剂以撤除腻虫。

The roses have got greenfly .

这些玫瑰花上有蚜虫。

If the leaves on your apple tree curl , then it probably has greenfly .

如果苹果树上的叶子卷曲了，那很可能是长蚜虫了。

What with the dry weather and a plague of greenfly , my roses are very disappointing this year .

由于天气干旱和蚜虫灾害，今年我的玫瑰花长得非常令人失望。