1、In recent years, there has been a growing concern about...
2、Nowadays, it is widely accepted that...
3、It is undeniable that...
4、It is a well-known fact that...
5、With the development of society, people are becoming more aware of...
6、As we all know, ...
7、It is worth noting that...
8、It is obvious that...
9、From my perspective, ...
10、In my opinion, ...
11、As far as I am concerned, ...
12、According to statistics/ research/ studies/ surveys/ experts/ professionals/ data...
13、Another key point to consider is...
14、Furthermore, ...
15、Moreover, ...
16、Additionally, ...
17、On the other hand, ...
18、However, ...
19、Despite this fact, ...
20、In conclusion, ...