When you compare the prices,you must take everything into consideration.
当你在考虑对比价格时,首先必须把一切都要考虑进去。
When there is no one in the office, you can leave the answering machine on so that people who call you up can leave a message.
当无人在办公室时,你可以打开留言机,这样打电话给你的人就可以留言了。