... 步进环 stepping ring 踏脚石状态 stepping stone state 步进开关 stepping switch ...
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stepping-stone state 起脚石状态
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Since then, even for such prominent statesmen as Charles Evans Hughes, George Marshall, John Foster Dulles, Henry Kissinger, and Colin Powell, the State Department has been a capstone, not a stepping stone.
ECONOMIST: Thailand's monarchy
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