触手

• No stranger or potential threat should ever be allowed to enter your personal safety zone without being challenged ( to reveal intent ) or stopped immediately ( if within touching distance ) - any approach from the rearward 180 degree circumference must be forcefully and immediately dealt with
  不应该允许陌生人或潜在的威胁进入你的安全区域而不受询问（以表明意图） ，或者不被立即阻止（如果进入触手可及的距离内） ? ?任何来自后方180度半圆的威胁都必须立即有力地加以应对！