举个例子，某种形状的肌肉蛋白连接起来形成肌纤维。
For example, muscle proteins of a certain shape connect to form a muscle fiber.
结缔组织在每个肌纤维周围约束肌纤维进入肌肉束。
Connective tissue surrounds each muscle fiber and binds muscle fibers into muscle bundles.
我们每个人有两种基本的肌肉纤维，慢抽搐和快抽搐肌纤维。
We have two basic types of muscle fibers, slow twitch and fast twitch.
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