boarder pen

• 绘图笔

boarder pen的用法和样例：

例句

1. The province boundaries are marked in with a fine mapping pen.
   省区界限是用很细的绘图笔加画在地图上的。
2. A trainee can become competent in scribing more quickly than in pen and ink work.
   初学者掌握刻图技术，要她用绘图笔蘸墨图更为迅速。