step-upOur editors are putting together more complete content — check back in about 20 minutesstep-up名詞 · 1形容詞 · 1step-up — noun名詞1. an increase in amount, size, or activity1.名詞釋義an increase in amount, size, or activity例句The company announced a step-up in production.step-up — adjective形容詞1 解釋1. involving a gradual increase or advance1.形容詞釋義involving a gradual increase or advance例句She took a step-up course to improve her skills.