对于一个给定的维，有3个wgrow值要考虑：两个边(左和右，或者上和下)和child值本身。

Given a dimension, you have three wGrow values to consider: two of the sides (left and right, or top and bottom) and the child's value itself.

youdao

方向-左，右，上，下。

Laterality - Left, Right, Up, Down.

youdao

人类思维分类是：黑和白，上和下，左和右。

Humans think in categories: black and white, up and down, left and right.

youdao

- Parses through them, which means to read through this-- what are really just text files, top to bottom, left to right.

从语法上分析它们，这就是说要阅读它-,实际上是一个文本文件，从上到下，从左到右。

哈佛公开课 - 计算机科学课程节选

The week after we implemented the so-called game of 15, this little party favor where you move the numbers up, down, left or right.

到第三周，我们要编一个叫做“15”的游戏，就是经常在派对上玩的,可以把数字上，下，左，右移动的小游戏。

哈佛公开课 - 计算机科学课程节选

All of you chose Down, but Up does best against Left and Middle does best against Right.

你们都选择下,可是选上是左的最佳对策,而选中是右的最佳对策

耶鲁公开课 - 博弈论课程节选