piecewise smooth curve

例句：

1. 1. The project isbeing piecewise completed by the team.
   这个项目正由团队分阶段完成。
2. 2. The teacherexplained the problem to the students piecewise.
   老师分步骤地向学生们解释了这个问题。
3. 3. Thecompany is implementing a piecewise approach toits marketing strategy.
   公司正在实施一种分步的营销策略。