Many other existing dams need urgent repairs ; many new ones are planned but unbuilt .
很多其他现存的大坝继续修缮,很多新的大坝仍然停留在计划上。
The worst ones were in the east end , whitechapel , bethnal green , terrifying places , underage prostitutes lurking in the alleys , and an unbuilt sewage system pumping crap into the streets .
In the uk , for example , the unbuilt lochnagar street and river hull bridges are included , but the sackler crossing at kew and the infinity bridge at stockton are out .
Nearly a decade ago all nippon airways ( ana ) brushed aside doubts about boeing 's as-yet unbuilt 787 " dreamliner " and placed the biggest launch order for a new jet in the planemaker 's history : 50 aircraft .