right-and-left-hand core

例句：

1. 1. The right-and-left-hand core of the company is its leadership team.
   公司的左右手核心是其领导团队。
2. 2.The axis of this machine is perfectly aligned with the left-and-right hand grips.
   这台机器的轴线与左手握和右手握的位置完美对齐。
3. 3. The center of the city is bustling with activity and energy.
   市中心繁忙而充满活力。