Nor does it explain why, in a species where one parent determines handedness, a brood is not exclusively right or left-handed when the offspring would have the same genetic predisposition.(这也不能解释为什么在一个由父母一方决定利手的物种中，当后代具有相同的遗传倾向时，他们并非完全是右撇子或左撇子。)
30 years after Gruby's initial efforts, there are more left-handed product actually on the market.(在格鲁比初次尝试的30年后，市面上出现了更多面向左撇子的产品。)
I'm having trouble with this gear lever because I'm left-handed.(我难于操纵这个变速杆，因为我是左撇子。)
The twenty that make up the proteins on Earth are all left-handed.(组成地球上蛋白质的那20个（氨基酸）都是左旋氨基酸。)
In the human world, the left-handed seem at quite a disadvantage.(在人的世界里，左撇子似乎处于相当不利的地位。)
If you're left-handed, there's good news.(如果你是左撇子，那么这里有好消息。)
But if you're left-handed, don't let it get to you.(但如果你是左撇子，也不必烦恼。)
Like many other molecules, flurbiprofen has a left-handed and a right-handed form.(像其他许多分子一样，氟比洛芬酯具有左旋和右旋两种形式。)
The eye patterns of left-handed people may be reversed.(另外，左撇子的眼动模式可能是相反的情况。)
