A forensic doctor, going by the wound on the victim, can tell what type of knife has been used and whether the perpetrator is left-handed or right-handed.

法医只要看到伤者的伤口就能知道是哪一种刀子划出来的，是右手持刀还是左手持刀也能知道。

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Instead of declaring an unplayable lie and going back to the tee, he tried to hack the ball out right-handed, left it in the weeds, came up short again, and wound up with a six.

WSJ: Golf Coach Butch Harmon Speaks Out on Tiger Woods, Hank Haney and Phil Mickelson | Golf Journal.