1.
~ is used to form adjectives which indicate that something involves or enables travel from one side of an area to the other. For example, a ~continental journey is a journey across a continent.
...~Pacific flights between Asia and America.
...the Trans-Siberian railway.
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2.
~ is used to form words which indicate that someone or something moves from one group, thing, state, or place to another.
...~racial adoption.
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