left join and right join关于左连接和右连接
left wing and right wing左派与右派
Left Arm and Right Arm左右手
Left Rotate and Right Rotate向左旋转和向右旋转
left code and right code左右码
Left Hand and Right Hand左手
left down and right up左下右上
left hook and right hook左右勾拳
left center and right distance左