对于测试程序，我们只简单地让键侦听器根据按下的是左还是右shift键按向上或向下的方向循环，如清单5所示。
For the test program, we'll simply have a key listener loop up or down based on whether the left or right shift key is pressed, as shown in Listing 5.
它拖船在你的手，前进，后退，左，右方向上提供线索，防止司机分心。
It tugs at your hand, moving forward, backward, left and right to offer cues on direction and keep drivers from being distracted.
ARROW——显示为一个指向上、下、左、右方向的箭头。
Arrow - Shows as an arrow in up, down, left, or right directions.
左臂向上方弯曲，同时右膝抬起左肘。
Left arm curving up, simultaneously right knee lifting left elbow.
维持鼠标按键按下的状态下，用户可以操控箭头键将所选对象向上、下、左或右每次移动1个像素。
While holding down the mouse button, a user can manipulate the arrow keys to move the selection up, down, left, or right-one pixel at a time.
在左股骨上以33度角行骨切开术，远端从小转子倾斜向上制造反转子间骨折模型。
Osteotomies were created in left femurs at a 33-degree angle, running inferolaterally from the lesser trochanter to mimic reverse obliquity intertrochanteric fractures.
你没法左拐也不能右拐，只能向上帝祈求不要撞上。
You can't go left, you can't go right. You just pray to God it doesn't hit you.
在这个2020网格中，处于任何方向上(上，下，左，右或者对角线)的四个相邻数字的乘积的最大值是多少？
What is the greatest product of four adjacent Numbers in any direction (up, down, left, right, or diagonally) in the 2020 grid?
在这个2020网格中，处于任何方向上(上，下，左，右或者对角线)的四个相邻数字的乘积的最大值是多少？
What is the greatest product of four adjacent Numbers in any direction (up, down, left, right, or diagonally) in the 2020 grid?
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