外行指导外行的英文：
the blind leading the blind
n. 盲人，窗帘，托词
v. 使变瞎，使思维混沌
adj. 瞎的；失明的，盲目接受的，不能自制的，无理性的
- A blind driveway.
隐蔽的车道 - If the blind lead the blind, both shall fall into the ditch.
盲人领盲人，双双跌人沟。 - The very limit of human blindness is to glory in being blind.
人类盲目性的最根本局限就在于其对盲目性感到荣耀。 - We are all blind to our own choice blindness.
其实人人都有选择盲区。 - Light filtered through the blinds.
光线透过了帘子。
n. 领导，疏导，铅板 adj. 主要的，重要的
- Will you take the lead?
你领个头好吗？ - Lead poisoning( or plumbism )：Poisoning by accumulation of lead in the body.
铅中毒:铅在体内积累引起的中毒。 - The road leads direct there.
这条路直接通那儿。 - The dog is straining at its lead.
那条狗正使劲地拖拽皮带。 - Put the dog on the lead!
用皮带牵住狗！