The scientific team calculated these alternating epochs of rising and steady sea levels by examining sediment cores extracted from coastal salt marshes in the state of North Carolina.
该科研小组通过研究从北卡罗来纳州沿岸盐沼中提取的沉积物，计算出这些海平面上升和保持稳定的交替期。
In steady state, the levels of capital, and thus the output are not changing.
在稳态下，资本和产量水平都保持不变。
In steady state, the levels of capital, and thus the output are not changing.
在稳态下，资本和产量水平都保持不变。
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