Bear [beə] n. 熊

Define:

A large mammal belonging to the family Ursidae, known for its powerful build, thick fur, and typically being omnivorous. Bears are found in various habitats across the world and include species like grizzly bears, polar bears, and pandas.

定义:

一种属于熊科家族（Ursidae）的大型哺乳动物，以其强壮的体格、厚实的毛皮以及通常的杂食习性而闻名。熊分布在世界各地的不同栖息地，包括灰熊、北极熊和熊猫等物种。

Example: The hikers were cautious while exploring the forest, knowing that bears might be in the area.

例句：徒步旅行者在探索森林时非常谨慎，因为他们知道可能有熊在附近。

pig [pɪɡ] n. 猪

Define:A domesticated mammal of the species Sus scrofa, often raised for meat (pork) production. Pigs have stout bodies, cloven hooves, and are known for their intelligence.

定义: 一种属于猪科（Sus scrofa）的家畜哺乳动物，通常被饲养以供应肉食（猪肉）生产。猪具有粗壮的身体、分蹄的蹄子，并以其智力而闻名。

Example: The farmer raised pigs on his farm for both meat and their distinctive squeals became a familiar sound in the area.

例句：农夫在农场里养猪，既为了肉食，也因它们特有的尖叫声在该地区变得很熟悉。

rabbit ['ræbɪt] n. 兔，家兔

Define: A small mammal belonging to the family Leporidae, characterized by their long ears, hopping gait, and herbivorous diet. They are often kept as pets or found in the wild.

定义:

一种属于兔科（Leporidae）的小型哺乳动物，以其长耳朵、跳跃的步态和食草的饮食习性而特点明显。它们经常被养作宠物，或者在野外可以找到它们。

Example: The children delighted in watching the rabbits hop around the yard, their fluffy tails bouncing behind them.

例句：孩子们很喜欢看着兔子在院子里跳来跳去，它们蓬松的尾巴在身后弹跳着。

bird [bɜ:d] n. 鸟

Define: Warm-blooded vertebrates with feathers, beaks, and the ability to fly in most species. Birds are diverse and found in various ecosystems, with species ranging from tiny hummingbirds to large eagles.

定义:

温血脊椎动物，具有羽毛、鸟嘴，多数物种具有飞行能力。鸟类分布广泛，生活在各种生态系统中，物种从微小的蜂鸟到巨大的鹰等多种多样。

Example: The vibrant colors of the tropical birds added a breathtaking beauty to the rainforest.

例句：热带鸟类绚丽的色彩为雨林增添了惊人的美景。

mouse [maʊs] n. 鼠，耗子；

Define:

A small rodent characterized by its pointed snout, relatively large ears, and a long tail. Mice are known for their ability to adapt to various environments and are sometimes pests in human habitats.

定义:

一种小型啮齿动物，以其尖尖的鼻子、相对较大的耳朵和长尾巴而特点明显。老鼠以其适应各种环境的能力而闻名，有时会成为人类生活环境中的害虫。

Example: The cat stealthily crept up on the mouse that was nibbling on a piece of cheese.

例句：猫悄悄地走近正在啃着一块奶酪的老鼠。