sign up
英 [saɪn ʌp]
美 [saɪn ʌp]
注册;（和…）签约，雇用;报名（参加课程）
例句
Researchers have found that students who sign up to tutor others work harder to understand the material, recall it more accurately and apply it more effectively.
研究者们发现那些报名去辅导其他同学的学生会更加努力的理解学习材料，更加准确地回想起和更有效地运用这些材料。
Sign up for a class, download an app or reach out to someone in your industry and pick up a few new skills this summer.
报个班，下个软件，和业内的大佬建立良好关系，这个夏天，把本领学起来吧！
He‘d say anything to make you sign up.
他说了一些话会让你自动参加的。
