As shown in Figure 10, a dotted line with a closed, unfilled arrow means realization (or implementation); as we saw in Figure 4, a solid arrow line with a closed, unfilled arrow means inheritance.

如图10所示，一条带有闭合的单向箭头的点线意味着实现(或实施)；正如我们在图4中所见到的，一条带有闭合单向箭头的实线表示继承。

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In this paper, a generating algorithm of optimal arrow-line diagram, an optimizing algorithm of nodes allocation and a setting-out algorithm are given completely.

本文较完整地给出了最优箭线图的生成算法，节点布局优化算法和连线法。

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So in a moment you're going to go ahead and hit the spacebar and then as things fall from the screen when they line up with the left arrow, hit the left arrow with a different arrow, hit that arrow and see how good a score you can get.

一会儿你走到前面，敲一下空格键,当屏幕上面的东西从左边往下掉的时候,你就敲一下键盘上的左键,是哪个方向，敲对应的方向键就可以了,我们来看看你能得多少分。

哈佛公开课 - 计算机科学课程节选

The drop in the MACD-His below the zero line last week (see arrow) is also a sign of weakness.

FORBES: Will Hedge Funds Be Wrong Again?

Then they persuaded Arrow International, one of the largest manufacturers of central lines, to produce a new central-line kit that had both the drape and chlorhexidine in it.

NEWYORKER: The Checklist