Translation of "excessively" into Spanish

I am afraid I cannot convey the peculiar sensations of time travelling. They are excessively unpleasant.

Me temo que no pueda transmitir las sensaciones peculiares del viaje en el tiempo. Son excesivamente desagradables.

Obviously, too much is precisely that quantity which is excessive, that's what it means.

Obviamente, demasiado es precisamente esa cantidad entendida como excesiva, y eso es lo que significa.

There are countries which receive amounts far in excess of their entire production.

Ciertos países perciben importes muy superiores a sus volúmenes de producción.