过去是一片挤满声音的黑暗。

The documenta is a mirror held up to the art world.

爱惜精神以备日后担当大任，虚度时光何以报父母之恩？

We're not asking people to give up anything. We're giving them something better.

There are two possible outcomes: if the result confirms the hypothesis, then you've made a measurement. If the result is contrary to the hypothesis, then you've made a discovery.