boarder pen的用法和樣例:
例句
- The province boundaries are marked in with a fine mapping pen.
省區界限是用很細的繪圖筆加畫在地圖上的。
- A trainee can become competent in scribing more quickly than in pen and ink work.
初學者掌握刻圖技術,要她用繪圖筆蘸墨圖更為迅速。
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