It take about twenty minute. 大约要20分钟 How long will it take about? 差不多要多久? It take about twenty minutes by bus. 坐公共汽车大约要20分钟. It will take you about 8 hours. 列车要开8个小时. It will take us about 15 minutes. 离这儿不远.大概15分钟. I would imagine the operation will take about an hour. 我猜想这个手术大概需要一个小时左右吧