Meeting at the edges without overlapping, as some petals do.
镊合状的在没有重叠的情状下边上镊合的，例如花瓣
An open framework made of strips of metal, wood, or similar material overlapped or overlaid in a regular, usually crisscross pattern.
格构开放式格架，由金属片。木片或相类似原料搭叠成格状，通常用交叉方式构成
There is no question of overlap between the two courses.
这两门课程之间不存在重叠的问题。
