You can get off the bicycle and take a few pictures.but you have to work out carefully how much tim

你确定你写的句子是正确的？？

你可以停下你的自行车下来照几张照片。但是你得仔细的计算好那需要花费多少时间

你可以从单车下来去拍照，但是你得计划好得花多少时间。

首先楼主的句子不对
我猜应该是You can get off the bicycle and take a few pictures.but you have to work out carefully how much time you wiil take
那意思是
你可以从单车下来去拍照，但是你得计划好得花多少时间。