The future expansion of the business calls for two new factories.将来业务扩大需要新建两个工厂。
Heat causes the expansion of gases.热使气体膨胀。
His chest is like the expansion of a sea.他的胸怀像大海一样宽阔。
He gave an expansion of that affair.他详述了那件事。
His big book is an expansion of the little book he wrote before.他这本大部头的书是在以前写的一本小册子基础上扩充而成的。