他们的肌肉或是直接与外骨骼的内部凸出，即表皮内突相连，或是间接的和与神经点相连的肌原纤维细丝连接着。
The muscles are attached either directly to internal protrusions of its external skeleton, called apodemes, or indirectly, by filaments attached to the connection points.
他们的肌肉或是直接与外骨骼的内部凸出，即表皮内突相连，或是间接的和与神经点相连的肌原纤维细丝连接着。
The muscles are attached either directly to internal protrusions of its external skeleton, called apodemes, or indirectly, by filaments attached to the connection points.
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