单词：fiber-optic cable
fiber-optic cable的用法和样例：
例句
- A land line can be wire or fiber optics or microwave.陆上线路可以是金属或光纤电缆或者微波线路。
- Every fiber-optic cable used for networking consists of two glass fibers encased in separate sheaths.使用来连网的每个光纤电缆是由包装在分开的保护套内的二条玻璃纤维组成。
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