maturnity pen

例句：

1. 1. The artist used a maturnity pen to draw the portrait.
   这位艺术家用一种马特尼特笔来绘制肖像。
2. 2. She prefers using a maturnity pen for her writing.
   她更喜欢使用一种马特尼特笔来写作。
3. 3.The teacher gave each student a maturnity pen as a gift.
   老师给每个学生一个马特尼特笔作为礼物。