You stand in a garden. A low noise reaches your ears. You see a small insect flying near your head. You turn to look, and it flies out of sight. There it is again! You move slowly. You can see yellow and black stripes on it.
你站在花园里。低噪音传到你的耳朵。你看到一只小昆虫在你头顶附近飞翔。你转过身去看，它飞出了视线。又来了！你移动得很慢。你可以在上面看到黄色和黑色的条纹。
Is it a bee? It lands on a flower, and you take a closer look.
是蜜蜂吗？它落在一朵花上，你仔细看一看。
Bees fold their wings onto their backs when they stop flying. But this insect’s wings reach out like a fly’s. That’s because it is a fly—a flower fly.
蜜蜂停止飞行时会将翅膀折叠在背上。但这种昆虫的翅膀像苍蝇一样伸出来。那是因为它是一只苍蝇——一只花蝇。
Many flower flies look like bees. This helps keep them safe from animals that may want to eat them. Insects with yellow and black stripes usually have stingers(刺). Insect eaters, such as some birds and frogs, need to get stung only once to know that stripes mean trouble. Flower flies can’t sting, but insect eaters see the stripes and leave the flies alone.
许多花蝇看起来像蜜蜂。这有助于保护它们免受可能想吃掉它们的动物的伤害。有黄色和黑色条纹的昆虫通常有刺。食虫者，如一些鸟类和青蛙，只需要被刺一次就知道条纹意味着麻烦。花蝇不会蜇人，但食昆虫的人看到了条纹，就别管苍蝇了。
Flower flies spend most of their time looking for food. Like bees, flower flies eat pollen and nectar. This makes them easy to find in a garden full of flowers. They are helpful garden insects just like bees. Adult flower flies move pollen from one flower to another, which helps some flowers grow into fruit.
花蝇大部分时间都在寻找食物。和蜜蜂一样，花蝇也吃花粉和花蜜。这使得在满是鲜花的花园里很容易找到它们。它们和蜜蜂一样是有益的花园昆虫。成年花蝇将花粉从一朵花移到另一朵花，这有助于一些花长成果实。
Flower flies can stay in one place while flying. Most insects move forward when they fly. But flower flies can twist their wings, much like hummingbirds do. Twisting keeps them in one place, so they can remain over flowers, leaves, or even you!
花蝇在飞行时可以呆在一个地方。大多数昆虫在飞行时向前移动。但是花蝇可以像蜂鸟一样扭曲翅膀。扭曲可以把它们保持在一个地方，这样它们就可以停留在花朵、树叶甚至你身上！
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