to understand something fully
何かを完全に理解する (nanika o kanzen ni rikai suru)
"It took me a while to get a grasp of the new software."
"新しいソフトウェアを理解するのに時間がかかりました。" (Atarashī sofutowea o **rikai suru** no ni jikan ga kakarimashita.)
to forget past mistakes and start fresh
the less harmful of two bad options
to become familiar with something new
Try as hard as you can.
to make a decision without enough information
Involved or informed about a situation
