“billions upon billions of”可以造什么句，billions upon billions of造句

To overcome them, we spend billions upon billions of dollars every year-on cosmetics, diet products, fashion, and plastic surgery.

This energy is liberated at the center of the Sun as billions upon billions of nuclei of hydrogen atoms collide with each other and fuse together to form nuclei of helium, and in doing so, release some of the energy that is stored in the nuclei of atoms.

The center of the star collapses in on itself, billions upon billions of tons of star stuff crashed smaller and smaller until the whole star is squeezed to a single microscopic point.

Should America spend billions upon billions of dollars to send human beingssintosspace on perilous missions?