1. scaffolding   [ni;ni] gong ，[wa;wa] gong   shui [ni;ni]   [jia;jiao;jue] shou jia   cuo shi ci dai   Hint Half-n-half Clue   2. rafter   ban ，ban tiao   han tie   [ni;ni] gong ，[wa;wa] gong   chuan mu   Half-n-half Clue   3. shovel   ban ，ban tiao   tie qiao   kui jia ，an quan mao   tu zhi   Half-n-half Clue   4. pickax, pickaxe, pick axe   han tie   du lun [che;ju]   jian chu ，[gao;hao] ，[gao;hao]   jian zao zhe   Half-n-half Clue   5. soldering iron   shui ping   han tie   hua lun   ban ，ban tiao   Half-n-half Clue   6. cement   ju [ti;ti]   shui [ni;ni]   tu zhi   ban ，ban tiao   Half-n-half Clue   7. crane   qi [chong;zhong] ji   chuan mu   she xian   ban ，ban tiao   Half-n-half Clue