By 1946, however, the battle over continental drift was in full swing.

然而，到1946年，对大陆漂移说的战斗进行得如火如荼。

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Meanwhile, the financial world relies on Alan Greenspan, chairman of the Federal Reserve, to act as its swing producer, pumping a little more liquidity into the system when prices are soft, a little less when they drift too high.

ECONOMIST: Other reasons to worry