ここでのstep upとはどう言う意味ですか。
ネイティブによる回答
Rebecca
To "step up" here means to take action or initiative when there is a need for help. To "step up" can also mean to begin to work hard at something. Ex: He stepped it up at work to try and get the promotion. Ex: After their father died, the oldest son really stepped up and took on more responsibilities to take care of the family.