In some theoretical articles, most study emphases are put on the relation between the right hand working and the timbre, but study of the influence of the left hand on the timbre in violin playing is very rare.
在过去的理论著作中 ,大多重视右手运弓与音质音色关系的研究 ,而关于左手对音质音色影响的研究涉及甚少。
Relating to, designed for, or done with the left hand.
左手的左手的，用左手做的，适于左手的
The right hand helps the left and the left the right .
右手帮左手，左手也帮右手。
One who is left-handed.
左撇子惯用左手的人
A blow delivered by a boxer's left hand.
左手拳拳击手左手所打出的一拳
left-handed golfers need left-handed clubs; left-handed scissors.
左手打高尔夫球的人要用左手的球棒；左手剪。
Your left hand says, 'Good afternoon.'
你左手说， “下午好。”
sinistral individuals exhibit dominance of the left hand and eye.
左撇子的左手和左眼占优势。
A turn in the direction of the left hand or side.
向左转朝左手或左边方向的转弯
preferring to use left foot or hand or eye.
更喜欢用左脚、左手或左眼。
my left hand; left center field; on the left when facing downstream; on the left bank.
我的左手；左中外场；面朝下游时在左边；在左岸。
The left hand shakes with the right hand.
左手与右手协调活动。
a baseball pitcher who throws the ball with the left hand.
用左手投球的棒球投手。
a left-arm spin bowler
投左手旋转球的投球手.
Aha, and I use my left, I'm left-handed.
啊，我用的是左手，我是左撇子。
a baseball player who can bat either right or left handed.
能用右手或左手击球的棒球手。
we put the right hand over the left and bow slightly.
右手放在左手上拱手，稍稍躬身而行礼。
The boxer is hitting with his right arm, guarding with his left.
这个拳击手是用右手出击, 左手防护。
Left_hand Rule,Right_hand Rule and Right_hand Screw Rule;
左手定则、右手定则与右手螺旋定则