... 疏开发射阵地 dispersed launch site 硬式发射阵地 hard emplacement; hard launch site; hard site; hard-based site 预备发射阵地 alternate position ...
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hard launch site
硬发射场
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Keep in mind that anytime the shuttle is about to launch, the site's traffic picks up exponentially, and it can be hard to make the connection.
CNN: The Internet: the final frontier for space watchers
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