an obverse leaf

• 钝头形的叶

an obverse leaf的用法和样例：

例句

1. The main ones include head lettuce, such as iceberg, leaf lettuce, Boston, bibb and romaine.
   主要的包括头形菜，如空心菜，散叶莴苣，波士顿莴苣，比伯生莴苣和长叶莴苣。