以下为句子列表：
英文: Free-space optics systems can cost one third to one tenth the price of conventional underground fiber-optic installations.
中文: 无线光通讯系统的费用是传统地下光纤设施的1/10~1/3。
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英文: The space optics remote sensor, being a subsystem for executing significant task, has special requirements for its structure, behavior, operating precision, seal, reliability and so on.
中文: 组件乃至系统不仅须经历动力学环境试验的严格考核，而且还须在此基础上通过其它相关试验做进一步的测试。
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