埃及就新宪法举行全民投票
Egyptians have begun voting amid tight security in a two-day referendum on a new constitution, which could pave the way for fresh elections.
埃及人正在举行一场为期两天的新宪法全民投票，国内戒备森严，这将为新选举铺平道路。
The new charter aims to replace the constitution passed under Islamist President Mohammed Morsi months before he was ousted by the army.
The military wants a strong "Yes" vote to endorse（认可） Mr Morsi's removal.
His Muslim Brotherhood, now designated a terrorist group, is boycotting the vote and there are fears of violence.
Shortly before voting began, an explosion was heard near a court building in Cairo, although no casualties were reported.
A huge security operation is being mounted for the two days of voting. The interior ministry says 200,000 police officers, 150 central security units and 200 combat groups are being deployed around polling stations on both days.
The BBC's Orla Guerin in Cairo says this has been a distorted campaign, with endorsements for the new constitution flooding state-run and private TV and radio.
However, spotting any posters from the "No" campaign is a lot harder and people have been arrested for putting them up, our correspondent says.
Democratic or not, she says, the referendum is seen by many as more than a ballot on a new constitution - it is widely viewed as a verdict on the removal of Mr Morsi.