Flies are insects of the order Diptera, the name being derived from the Greek δι- di- "two", and πτερόν pteron "wing".

2025年3月13日 · fly, (order Diptera), any of a large number of insects characterized by the use of only one pair of wings for flight and the reduction of the second pair of wings to knobs (called halteres) used for balance. The term fly is commonly used for almost any small flying insect.

Flies are small flying insects belonging to the order Diptera distinguished by a mobile head, two large compound eyes, a single pair of flying-wings, and an appendage-like structure used for sucking. They exhibit excellent species diversity and are abundant almost in all parts of the world.

Flies are more than just a nuisance. These buzzing insects also play important roles in nature, including pollinating plants, breaking down organic material, and serving as food for other bugs and animals. Find more fun fly facts below and then learn how to help keep them away.

2022年3月16日 · Ommatidia — the tons of tiny lenses flies use to see — are bunched together in a globular shape to form a compound eye. The large, round shape of their eyes gives flies an almost 360-degree view of their surroundings.

When a bird, insect, or aircraft flies, it moves through the air. The poor bird couldn't fly because it had a broken wing.这只可怜的鸟飞不起来了，因为它的翅膀断了。 As soon as it saw us, the bird flew away/off.鸟一看到我们就飞走了。 We flew to Paris.我们乘飞机去巴黎。 We fly from/out from/out of La Guardia, but fly back (in)to JKF.我们从拉瓜迪亚机场起飞，但返航时在约翰.F.肯尼 …

1.fly的基本意思是“飞”“飞行”,指鸟、昆虫或飞行器在空中飞翔或航行,引申可表示“乘飞机飞越〔旅行〕”“驾驶〔操作〕飞行器”“用飞行器运送 (货物或乘客)”。

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A fly (plural: flies) is an insect of the order Diptera. [1] . The Diptera is a large order of advanced flying insects. Their most obvious difference from other insects is in their flight. A normal fly has two flight wings on its thorax and a pair of halteres.

2024年5月27日 · The fly is one of the most common and diverse groups of animals on the planet. Although they so often share an antagonistic relationship with humans as an annoyance or a …