I swam ACROSS / THROGH the river? Melyik a jó?

Ha a víz FELSZÍNÉN úsztad át a folyót, akkor ACROSS.

Ha a víz ALATT, akkor THROUGH.

Lásd:

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Across and Through

The difference between across and through is similar to the difference between on and in. Across is used for a movement in a two-dimensional space. Through is used for a movement in a three-dimensional space.

We walked across the field. (We were on the field.)

He drove through the tunnel. (He was in the tunnel.)

We slowly walked through the wood. (We were in the wood.)