大概需要多久才到家呢？
假设您排在1号付款台前的长队中，您可以粗略地估算出大概需要多久时间才能排到自己付款。
Suppose you are in a long line at checkout counter 1 — you can roughly guess how long it would take to move up in that line.
你不需要知道这是多久之前的事，但我能给你一个大概时间---那时我还穿着喇叭裤呢。
You don't really want to know how long ago that was, but to give you a rough idea — I wrote it while wearing my bellbottoms.
你也可以目测进度条的前进速度，大概估计出还需要多久才能全部搞定。
You can also gauge how fast the bar is filling up, so can roughly estimate how long it's going to take for the whole thing to finish.
您每一次拍照需要多久的时间？在您自己的身上画画需要多久？另外，在创造一个作品的时候，您大概需要多少外介的帮助？
How many hours you need in order to perfect the photographic shot, and the painting of your body. How much help do you need?
现在，从上海乘火车去杭州大概需要90分钟，但过不了多久，新的沪杭高铁即将通车，两地车程将进一步缩短至45分钟。
From Shanghai to Hangzhou by train currently takes about 90 minutes , but the new high-speed rail link scheduled to open shortly will cut this to 45 minutes .
现在，从上海乘火车去杭州大概需要90分钟，但过不了多久，新的沪杭高铁即将通车，两地车程将进一步缩短至45分钟。
From Shanghai to Hangzhou by train currently takes about 90 minutes , but the new high-speed rail link scheduled to open shortly will cut this to 45 minutes .
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