Charge for each half - hour in excess of 4 hours for dismantling and moving in out with services listed in 租用超过4小时，以便搬入拆除或移走布景，超时每半小时的收费，包括
It is further estimated that 17 , 500 species will become extinct every year - which is about one every 30 minutes 此外，推算每年约有17 , 500个物种绝种，相等于每半小时便有一个物种在地球消失！
The hotline information will be updated every half an hour . moreover , passengers should be patient while waiting for immigration clearance 26027799 ，查询罗湖车站旅客轮候过境情况，有关资料将每半小时更新一次。
Make sure lighting is sufficient when using computers . try to take a short break every half an hour to relax your eyes by looking at some distant objects L使用电脑时，也要确保光线充足，观看电脑萤光幕每半小时，应休息片刻，放松眼睛，眺望远景。
Make sure lighting is sufficient when using computers . try to take a short break every half an hour to relax your eyes by looking at some distant objects L使用电脑时，也要确保光线充足，观看电脑萤光幕每半小时，应休息片刻，放松眼睛，眺望远景。
