左【zuǒ】
1. left 2. left-leaning; progressive; inclined towards the revolution
[名]1、左边;和“右”相对 [形]2、指派别或思潮进步、革命

有的小孩分不清左和右。
Some kids can not tell the left from the right.

这场争论可归结为左派与右派之间的冲突。
The issue really boils down to a clash between left and right.
左边【zuǒ biān】
left; the left
[名]靠左的一边

在地图上,左边是西,右边是东。
The left side of a map is the west while the right side is the east.
左右【zuǒ yòu】
1. about; around; or so 2. master; control; influence 3. the left and right sides
[助]1、表示概数 [动]2、支配,操纵 [名]3、左和右两个方面

他们九点半左右抵达宾馆。
They reached the guesthouse about half past nine.

这种局面你左右得了吗?
Is it within your ability to control the situation?

烈士的墓前,左右两侧摆满了鲜花。
Flowers are placed on the two sides of the grave of the martyr.