take about是什么意思中文翻译

　　It will take about four hours to defrost.

　　解冻要花四小时左右。

　　I should imagine it will take about three hours.

　　我想得用差不多三个小时吧。

　　I would imagine the job will take about two days.

　　我猜想这工作大概需要两天左右的时间吧。