1.
In contemporary society
在當今社會

In contemporary society, young people tend to neglect the importance of health. So, marathon would be a practical way to arouse their awareness of this issue.

2.
In this day and age
如今

In this day and age, students are usually interested in some special sporting events, so our programme should meet the need of students.

1.
It goes without saying that …
不用說，⋯⋯

It goes without saying that the problem of increasing number of NEETs should be tackled by the government promptly.

2.
As a matter of fact,...
…事實上，⋯⋯

As a matter of fact, dancers also require strong sense of self-discipline in dieting and trainings.

1.

There are multifarious reasons to which … can be ascribed, with … being the most convincing one ⋯⋯是由多種原因所構成的，而⋯⋯是最有說服力的一項。

There are multifarious reasons to which the rise of athleisure can be ascribed, with influence of celebrity endorsement being the most convincing one.

2.

Recently, … has been brought into focus 最近，⋯⋯引起關注。

Recently, the problem of long working hours has been brought into focus as many of our colleagues are leaving office very late.

1.

If the above suggestions can really be put into practice, … 如果能真正做到以上的建議，⋯⋯

If the above suggestions can really be put into practice, the safety of young children can be ensured and both the school and parents will be satisfied with those proper guidelines.

2.

Taking all these factors into account, we can draw an unshakable conclusion that… 考量以上的因素，我們可以得出一個無可動搖的結論⋯

Taking all these factors into account, we can draw an unshakable conclusion that showing video-recordings of live drama performances are reasonable and marvelous idea to attract people in watching them.