13. Blind reading is just wasting time.
盲目读书就是在浪费时间。
还能这样说：
It is a waste of time to read blindly.
We are killing time if we read blindly.
谚语：
The blind leading the blind.
瞎子给瞎子引路，无知的人开导无知的人。
14. We need to read more books which can help our career.
我们要读更多有助于事业发展的书籍。
还能这样说：
It is necessary for us to read more books helpful for our career.
Books that do good to our career should be read more.
应用解析：
be common knowledge 人所共知；
come to sb.'s knowledge 被某人熟悉；
to one's knowledge 据自己据知；
with one's knowledge 告知某人
15. It is not good to read lying on the bed.
躺在床上看书不好。
还能这样说：
Reading in bed is not good.
Reading in bed will do harm to you.
谚语：
As one makes one's bed, so one must lie on it.
自作自受，自食后果。