rows of vegetables should be planted in an east -west direct

逐句对以如下：
Rows of vegetables should be planted in an east -west direction.
一行行的蔬菜应该沿东西方向种植.
That way ,as the sun passes overhead ,all the plants will receive an equal amount of light.
那样的话,当太阳进过上空时,所有的作物都能得到同样数量的阳光.
This is especially important when the plants grow to different heights.当作物长到不同高度时这就特别重要.祝你开心如意!