a true and final test of success
成功の真の最終試験 (seikou no shin no saishuu shiken)
"The real market will be the acid test for this invention."
"本当の市場がこの発明のためのアシッドテストとなるでしょう。" (hontou no shijou ga kono hatsumei no tame no **ashiddo tesuto** to naru deshou)
to be extremely surprised or shocked
to say bad things about someone when they are not present
to complete a form by providing information
A pessimistic attitude or perspective
to prepare for all possible outcomes; to be cautious
used when expressing a sincere or frank opinion
