a crucial test that proves the value or success of something
una prueba crucial que demuestra el valor o éxito de algo (una prueba crucial que demuestra el valor o exito de algo)
"The product launch will be the acid test of our new design."
"El lanzamiento del producto será la prueba ácida de nuestro nuevo diseño." (El lanzamiento del producto sera la **prueba acida** de nuestro nuevo diseno)
to hope that things will happen the way you want
considering something from one's own perspective
something that suits one’s interests or abilities perfectly
A true friend tells you harsh truths to your face.
to reach an agreement or arrangement, especially in business
to fulfill promises and obligations