'osteichthyes'并不是一个国家的语言，而是一个生物学术语，指的是硬骨鱼类。它是由希腊语的osteon（意为骨头）和ichthys（意为鱼）组成的合成词。
以下是9个含有'osteichthyes'的例句：
1. Osteichthyes are a diverse group of fish that includes both freshwater and marine species.（硬骨鱼类是一个包括淡水和海水物种的多样化鱼类群。）
2. Many of the world's most popular game fish, such as trout and bass, belong to the Osteichthyes.（许多世界上最受欢迎的游戏鱼，如鳟鱼和鲈鱼，都属于硬骨鱼类。）
3. Osteichthyes are characterized by their bony skeletons, gill covers, and air bladders.（硬骨鱼类以其骨骼、鳃盖和气泡的特征而著称。）
4. The Osteichthyes evolved from an earlier group of fish known as the placoderms.（硬骨鱼类从一个早期的鱼类群体——盾皮鱼类——演化而来。）
5. One of the most distinctive features of Osteichthyes is their ability to regulate their buoyancy through their air bladders.（硬骨鱼类最显著的特征之一是它们通过气泡来调节浮力。）
6. The majority of commercial fish species belong to the Osteichthyes.（大多数商业鱼类物种都属于硬骨鱼类。）
7. Osteichthyes are divided into two major groups: the ray-finned fish and the lobe-finned fish.（硬骨鱼类分为两大类：硬骨鱼和肺鱼。）
8. The Osteichthyes are an ancient group of fish that have been around for over 400 million years.（硬骨鱼类是一个已经存在超过4亿年的古老的鱼类群。）
9. Some scientists believe that the coelacanth, a type of lobe-finned fish, may be a close relative of the earliest Osteichthyes.（一些科学家认为，肺鱼类的一种——腔棘鱼——可能是最早的硬骨鱼类的亲戚。）
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