Wegener proposed the continental drift theory.

魏格纳提出了大陆漂移说

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。

Why this elaborate analogy with plate tectonics and continental drift?

为什么要煞费苦心地拿板块学说和大陆漂移来进行类比？

A few writers have suggested that perhaps continental drift causes polar wandering.

一些作家已经提议也许大陆漂移引起两极漫游。

Massive segments or plates of the crust move over the mantle in the process of continental drift.

大陆漂移雕塑了地壳的外观，使现在大陆形成。