up stroke

例句：

1. 1.The artist carefully drew each up stroke on the canvas.
   艺术家仔细地在画布上绘制每一个上笔画。
2. 2. When writing, it's important to pay attention to the up strokes and down strokes.
   书写时，要注意上笔画和下笔画。
3. 3. The painter was meticulous in his up strokes, ensuring every detail was perfect.
   这位画家在上笔画上非常细致，确保每一个细节都完美无瑕。