Police, hunting the bombers who targeted three underground trains and a double-decker bus last Thursday, have warned that the forensic search for clues is a painstaking process that could take time.
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- 警方正在追捕上周四制造了三处地铁和一辆双层巴士爆炸的凶徒,警方警告说,追查线索是艰苦的过程,需要时间。