办公室头顶有横梁化解:三思而后行有的是look before you leap，有的是second heads are better than one

三思而后行有的是look before you leap，有的是second heads are better than one 三思而后行(look before you leap)从何而来 请用英语解释它的典故 look before you leap是三思而后行吗 You must look before you cross the road改为祈使句 LOOK~！~！~！ Look before you leap ,for snakes among the flowers creep 这谚语的中文意思 是 什么 You know many ladies look at many hats before they buy on and this makes salesmen very tired 三思而后行用英语怎么说 怎样做到三思而后行？？？ 三思而后行的解释