中国已经通过了一系列痛苦的变化和实验。
China has been through a wrenching series of changes and experiments.
是服务优先顺序的实验，已经通过运行，下载后就可以使用了。
Service prioritization of experiments have been run through, after downloading can use.
该系统现已经通过实验室初步测试。
The system has passed the initial test in the laboratory now.
该系统现已经通过实验室初步测试。
The system has passed the initial test in the laboratory now.
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