to try something out before committing fully
попробовать что-то, прежде чем полностью посвятить себя этому
"Before launching the product, we decided to test the waters."
"Перед запуском продукта мы решили проверить воду."
to begin to take effect
to work very hard to achieve something
to criticize someone publicly for their behavior or actions
to make someone very sad
to make a mistake; to fail at something important
to pretend to be confident or happy when you are not