Canadian geophysicist Tuzo Wilson realized that this age progression could result if the islands were formed on a surface plate movingover a fixed volcanic source in the interior.
加拿大地球物理学家 Tuzo Wilson 意识到,如果一块在内部固定火山源上移动的表面板块形成了岛屿,就会导致岛屿年龄增加。
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The government is having to introduce some difficult changes, particularly in movingover to a market economy.