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来源:雅诚德英语网
This was possible because of the Navy's formerly top-secret system of underwater listening devices spanning the oceans.
这是可能的,因为海军的水下监听设备之前使用的最高机密系统覆盖多个大洋。
This was possible because of the Navy's formerly top-secret system of underwater listening devices spanning the oceans.
这是可能的,因为海军的水下监听设备之前使用的最高机密系统覆盖多个大洋。