to become too frightened to do something
失去做某事的勇气
"I was going to ask her out, but I lost my nerve."
"我本打算约她出去，但我失去了勇气。"
to do something innovative or pioneering
to calculate and record a sale
to stay focused on achieving your goal
A significant advancement or achievement.
to decide or act as the situation develops
to watch or monitor something or someone carefully
