persist: v. 坚持, 持续
infer: v. 推断
derive: v. 得自，来源于
industrious: v. 勤勉的，刻苦的
source: v. 源泉，来源
convey: v. 传达，转达
reap: v. 收割，收获
We can infer from it that…
It is very true that … for which there are several reasons.
Rome was not built in one day.
To conclude, I would like to borrow another ancient saying that…
Hence, I firmly believe that…